Archive – week 10 – 20 – 21
*Please REFRESH this Page every time you view!!!
The 4 day – A, B, C, D cycle looks like this:
Day Period
2 3 4
In class: A Lab Lab Single Class
Remote: Lab Lab Single Class
In class: B Single Class LAB LAB
Remote: Single Class LAB LAB
Monday In class: C Single Class LAB LAB
Remote: Single Class LAB LAB
In class: D Lab Lab Single Class
Remote: Lab Lab Single Class
This weeks 5 day Schedule:
11/9 – Monday – “C” Day – period 2, – I 2(A,C) 3(A) AP CHEMISTRY
–period 2, – R 2(A,C) 3(A) REMOTE INSTRUCTION
-period 3,4 (LAB) – I. 3(C) 4(A,C) AP CHEMISTRY
-period 3,4 (LAB) – R 3(C) 4(A,C) REMOTE INSTRUCTION
11/10 – Tuesday- “D” Day – period 2,3 (Lab) – I 2(B,D) 3(D) AP CHEMISTRY
– period 2,3 (Lab) – R 2(B,D) 3(D) REMOTE INSTRUCTION
-period 4 – I 3(B) 4(B,D) AP CHEMISTRY
-period 4 – R 3(B) 4(B,D) REMOTE INSTRUCTION
11/11 – Wednesday – OFF – Veterans Day – Off
11/12 – Thursday “A” Day – period 2,3 (Lab) – I 2(A,C) 3(A) AP CHEMISTRY
–period 2,3 (Lab) – R 2(A,C) 3(A) REMOTE INSTRUCTION
-period 4 – I 3(C) 4(A,C) AP CHEMISTRY
-period 4 – R 3(C) 4(A,C) REMOTE INSTRUCTION
11/13 – Friday- “B” Day –period 2, – I 2(B,D) 3(D) AP CHEMISTRY
– period 2, – R 2(B,D) 3(D) REMOTE INSTRUCTION
-period 3,4 (LAB) – I 3(B) 4(B,D) AP CHEMISTRY
-period 3,4 (LAB) – R 3(B) 4(B,D) REMOTE INSTRUCTION
11/9 – Monday – “C” Day – period 2, – I 2(A,C) 3(A) AP CHEMISTRY
–period 2, – R 2(A,C) 3(A) REMOTE INSTRUCTION
-period 3,4 (LAB) – I. 3(C) 4(A,C) AP CHEMISTRY
-period 3,4 (LAB) – R 3(C) 4(A,C) REMOTE INSTRUCTION
The Red Team and the Green Team are remote today. Please move to the Remote Instruction Page.
Period 2, Period 3: Class Lesson
1. Review of questions on the last page of Intro Acid Base Basics packet.
2. Review of Table L, conjugate base strength in terms of strength of acid
a) Complex ions acidity/ backside of conjugate acid worksheet.
b) Basic (washing soda) , Acidic, neutral salts
3. Acid / Base indicators – Complete the last page (4) of the packet
a) straw and bromothymol blue demo
b) phenolphthalein – rough titration.
4. Writing Net ionic acid base reactions – may get to start this –
Stiochiometry 5a – Acid Base Reactions new classwork worksheet.
Stiochiometry 5a – Acid Base Reactions new Key.pdf
Period 4:
1. RAT #1 Acid Base Intro Basics
You will take the quiz twice.
– First time – Complete the Form Below individually –
– Second time – Complete with a group using a scratch ticket,
Those at home I will make breakout rooms in Zoom.
Individual RAT form: NOT OPEN UNTIL GAME TIME!
Today’s Class lecture:
11/9 – Monday – “C” Day – Homework:
1. FOR THOSE THAT did the group RAT and did not get the auto – reply PLEASE check your emails and please complete the activity. Keep making submissions until you get a 100. Understand the each submission counts against the group. I will accept the group grade only.
2. Please complete the SIDE 1 –
Stiochiometry 5a – Acid Base Reactions new.pdf worksheet with using the posted video below.
This is a lesson in writing Net Ion Acid/Base Reactions!
*Remember that soluble salts (aq) were never written together in NET ION EQUATIONS while the precipitate (s) are because they do exist in a crystal together. In Acid/Base the “soluble ” compound is the “Strong” Acid or Base because they completely dissociate just like soluble salts, however weak acids and bases are NOT completely dissociated thus must be written together. WATER IS A NEVER Written dissociated because they barely dissociate!!!
Tutorial on Stoichiometry 5a – Acid Base Reactions new.pdf worksheets:
New Side One Lecture : Acid/Base Net Ion Reaction Review:
Okay i made an error on the last net ion reaction. The product of NH3 and H3O+ is NH4+ and water (H2O)! Sorry about that! I was trying to illustrate the reaction between a Strong Acid (H3O+) and a weak base (NH3) thus water would be made in the neutralization reaction. (Thanks Josh Kaplan 2018)
3. Please complete side 2 of the Stiochiometry 5a – Acid Base Reactions new.pdf with me in he video below:
New Side 2 Lecture : Acid/Base Titration problems:
RED TEAM and GREEN TEAM Will take the RAT QUIZ Tomorrow!
3: Study for a RAT (quiz) Monday on:
A: the acid/base definitions (identify acids and bases)
B: Strength of acids/bases based on Table L
C: Conjugate Acid base pairs recognition
D: Acid / base calculations, page 3 and 4.
End of Monday…
11/10 – Tuesday- “D” Day –period 2,3 (Lab) – I 2(B,D) 3(D) AP CHEMISTRY
-period 2,3 (Lab) – R 2(B,D) 3(D) REMOTE INSTRUCTION
-period 4 – I 3(B) 4(B,D) AP CHEMISTRY
-period 4 – R 3(B) 4(B,D) REMOTE INSTRUCTION
The Blue Team and the Orange Team are Remote today. Please move to the Remote Instruction Team.
Period 2, Period 4:
1. Identifying Acid base definitions:
Back to the pumpkin Stoichiometry from last week:
 |
C2H2 (g) + 5/2O2 (g) —> 2CO2 (g) + H2O (g) 0r
2C2H2 (g) + 5 O2 (g) —> 4CO2 (g) + 2H2O (g)
|
The chemical reaction that exploded the pumpkin was combustion or redox but the reaction the made fuel, C2H2 was?
What kind reaction is this?
CaC2 (s) + 2H2O (l) —–> C2H2 (g) + Ca(OH)2
2. Review of Last Nights homework –
a) acid base stoichiometry neutralization reactions – last nights homework.
b) net ion reactions
3. Indicator demo with Phenolphthalein –
Period 3:
1. RAT #1 Acid Base Intro Basics
You will take the quiz twice.
– First time – Complete the Form Below individually –
– Second time – Complete with a group using a scratch ticket,
Those at home I will make breakout rooms in Zoom.
Individual RAT form: NOT OPEN UNTIL GAME TIME!
Today’s Class Lesson:
11/10 – Tuesday- “D” Day – Homework –
1. Acid Bases Pre – Titration classwork worksheet and review with key below.
2. Please review the Today’s (or yesterday’s) RAT . Expect a new Rat Thursday and Friday (on lab periods) that will include the same information but includes acid/base stoichiometry which your homework was based on!
It will count as a TEST 3 in quarter 1!!! I will take the better of the 2 RATS as Test 2!!!
Here is a blank RAT: .
Acid Base skills RAT 10 questions E009.pdf
Rat #1 – Acid Base Intro Basic Review: You probably do not need too much of this as you reviewed in class
when you took the group portion of the quiz.
This video has timecode buttons under the description to move to the question you need to review.
You will have to play in Youtube to see the descriptions!
End of Tuesday..
11/11 – Wednesday – OFF – Veterans Day – Off
11/12 – Thursday “A” Day – period 2,3 (Lab) – I 2(A,C) 3(A) AP CHEMISTRY
–period 2,3 (Lab) – R 2(A,C) 3(A) REMOTE INSTRUCTION
-period 4 – I 3(C) 4(A,C) AP CHEMISTRY
-period 4 – R 3(C) 4(A,C) REMOTE INSTRUCTION
The Red team and the Green team are Remote today. Please move to the Remote Instruction Page.
Period 2, Period 4: Class Lesson – Blue and Orange teams take RAT # 2 today.
1. WE will complete the ACID / BASE – RAT #2 Acid Base Intro Basics and Titration
This will count as a TEST 3!
a) Complete the Form Below for the Individual portion of the RAT.
b) Complete ticket with your Group!
Individual RAT FORM:
Period 3:
a) Lab 10 in introduction.
11/12 – Thursday “A” Day Homework.
1. RAT #2 in class for Red and Green Teams tomorrow.
2. Please watch the today’s class lecture on Acid Base titrations:
3. Read the notes posted below the virtual Lab:
4. Use the following virtual lab – LAB 10 – to calculate the concentration of the HCl.
Watch the titration or observe. Download the printed graph from the description under the video when you play it Youtube.
On the printed graph of this titration please add the following:
1. Main objective: TO determine the concentration of the acid (analyte).
2. Net ion reaction
3. Mark the equivalence point
4. Calculate the molarity of the strong acid USING the equivalence point (you will need the volume of base added)
I demonstrated this in the class lecture above. You will need a ruler!!
In the virtual lab below :
Thus 25.0 ml of Strong Acid (HCl) in the small beaker was titrated with 0.12M Strong Base , NaOH.
**ACID/BASE TITRATION Curve NOTES:
The new skills that we learned from Thursday’s/ Friday’s Titrations are identifying the parts of a Titration curve. The striking part of the Titration graph is the asymptotic line that occurs as the pH changes becomes exponential changes as the pH nears the equivalence point.
We learned the endpoint in an Acid/Base titration is really an approximation of the equivalence point. The endpoint refers to the volume of titrant added (Standard Base Yesterday) and pH that results when the chemical indicator changes color. This color change will never be exactly at the equivalence point but it approximates the volume of titrant added if the indicator has a color change on the asymptotic line.
Consider 2 titrations like the 2 we did yesterday. We used phenolphthalein which has a color change (turns from colorless to pink at pH changes of 8 – 9). What if we used Thymol blue or Methy red?
|
Table M  |
Do not forget that these indicators are themselves conjugate acid base pairs in equilibrium.
In the case of Thymol blue  |
Notice in the first Titration which you should recognize as a strong acid / strong base titration, with a pH of the equivalence pH of 7, can utilize both Thymol blue and Methyl red as indicators as the endpoints will be on the asymptotic line. They would have endpoints with approximately the same
volume as the equivalence point.
11/13 – Friday- “B” Day –period 2, – I 2(B,D) 3(D) AP CHEMISTRY
– period 2, – R 2(B,D) 3(D) REMOTE INSTRUCTION
-period 3,4 (LAB) – I 3(B) 4(B,D) AP CHEMISTRY
-period 3,4 (LAB) – R 3(B) 4(B,D) REMOTE INSTRUCTION
Friday the 13th!
The Blue team and the Orange team are Remote today.
Period 2, Period 3: Class Lesson – RED and GREEN teams take RAT # 2 today.
1. WE will complete the ACID / BASE – RAT #2 Acid Base Intro Basics and Titration
This will count as a TEST 3!
a) Complete the Form Below for the Individual portion of the RAT.
b) Complete ticket with your Group!
Individual RAT FORM:
Period 4: – Recorded – Stream
Download Logger Pro from self- service!
1. Lab 10 – virtual – Strong Acid / Strong Base review.
a) Net ion reaction
b) Equivalence Point identified graphically
c) Molarity of HCl (analyte) calculated from the equivalence point.
New:
d) Identify the endpoint using pH ranges from Table M
e) verify the initial pH
f) verify the final pH
Lab 10 INSTRUCTIONS- Grading Rubric posted below in the homework section.
We did not get a CHANCE TO START LAB 11 and complete anything below.
2.
Lab 11 titration –
Lab 11 – Weak Acid (HC2H3O2) titrated with 0.12M Strong Base, NaOH
4. Back at our seat we will compare and contrast both graphs, and I will walk you through how to
complete this Lab.
What is similar and dissimilar with these titrations?
a) Starting pH b) Ending pH c) size of the asymptote? d) pH at equivalence e) Buffer region
What is new with this titration?
a) How to determine the Ka from the half equivalence point
b) Describing the pH at the equivalence point – Why is not at 7? We will calculate this in the spring.
Henderson Hasselbalch Derivation – to obtain the Ka!!!!
To be posted when period 4 is over!
11/13 – Friday- “B” Day – Homework –
1. Complete Lab 10 – Lab 10 INSTRUCTIONS-
1. Please follow along with me with a copy of the titration graph (below) to complete Lab 10 using the class video THAT I added too (s0 the period 4 students will have to view the end portion)
Lab 10 Tutorial Video: – Period 4 today and more
.
Thus 25.0 ml of Strong Acid (HCl) in the small beaker was titrated with 0.12M Strong Base , NaOH.
In this Lab we were trying to determine the concentration of a the strong acid solution using a KNOWN concentration of a STRONG Base.
Thus 25.0 ml of Strong Acid (HCl) in the small beaker was titrated with 0.12 M Strong Base , NaOH.
Objectives –
On the Printed graph please number your work!
1: Determine the concentration of the acid.
2: Determine the equivalence point of the titration. (Identify of the graph)
3: Determine the end point of the titration. (Identify on the graph)
4: Determine the halfway equivalence point. (Identify on the graph)
5: Confirm the final pH of the titration.
6: Confirm the initial pH of the titration.
7: On the four points of the titration curve, (initial pH, final pH, equivalence point, halfway equiv.) determine the percentage of the Acid/Base
8: Write the net-ion reaction.
2. Complete the Lab Titration problem/Form:
You are going to complete the same work that you did with Lab 10 on a new titration graph that is also a Strong Acid Strong Base Titration. The titration uses the following:
25.0 ml of unknown concentration of HCl is titrated with 0.03 M of Ca(OH)2.
Please use the graph below to complete in the same way that you completed lab 10.
On the Printed graph please number your work!
1: Determine the equivalence point of the titration. (Identify of the graph)
2: Determine the concentration of the acid.
3: Determine the end point of the titration. (Identify on the graph)
4: Determine the halfway equivalence point. (Identify on the graph)
5: Confirm the final pH of the titration.
6: Confirm the initial pH of the titration.
7: On the four points of the titration curve, (initial pH, final pH, equivalence point, halfway equiv.) determine the percentage of the Acid/Base
8: Write the net-ion reaction.
3. Complete the Form using your values from the Strong Acid Base Titration Form worksheet.pdf
End of week 10 and the 1st quarter.
Remote Instruction:
1/9 – Monday – “C” Day – period 2, – I 2(A,C) 3(A) AP CHEMISTRY
–period 2, – R 2(A,C) 3(A) REMOTE INSTRUCTION
-period 3,4 (LAB) – I. 3(C) 4(A,C) AP CHEMISTRY
-period 3,4 (LAB) – R 3(C) 4(A,C) REMOTE INSTRUCTION
The Red Team and the Green Team are remote today.
Period 2 Zoom Stream info:
Topic: AP Chemistry – 11.09 – period 2
Time: Nov 9, 2020 08:00 AM Eastern Time (US and Canada)
Join Zoom Meeting
https://us02web.zoom.us/j/88166145346?pwd=VUV3WTkwU1E5anY1OC9oQ25jUTh2Zz09
Meeting ID: 881 6614 5346
Passcode: NtKS3B
One tap mobile
+16465588656,,88166145346#,,,,,,0#,,580030# US (New York)
Period 3 Zoom Stream info:
Topic: AP Chemistry – 11.09 – Period 3,4
Time: Nov 9, 2020 09:00 AM Eastern Time (US and Canada)
Join Zoom Meeting
https://us02web.zoom.us/j/85002092447?pwd=NXFVOVI1d1gzbGp6OTJiZkVUK1dMdz09
Meeting ID: 850 0209 2447
Passcode: 3Ejn0M
One tap mobile
+16465588656,,85002092447#,,,,,,0#,,716572# US (New York)
Period 2, Period 3: Class Lesson
1. Review of questions on the last page of Intro Acid Base Basics packet.
2. Review of Table L, conjugate base strength in terms of strength of acid
a) Complex ions acidity/ backside of conjugate acid worksheet.
b) Basic (washing soda) , Acidic, neutral salts
3. Acid / Base indicators – Complete the last page (4) of the packet
a) straw and bromothymol blue demo
b) phenolphthalein – rough titration.
|
sodium carbonate – Na2CO3  |
Sodium Bisulfate – NaHSO4  |
Chemical indicator Presentation:
Stiochiometry 5a – Acid Base Reactions new classwork worksheet.
Stiochiometry 5a – Acid Base Reactions new Key.pdf
Period 4:
1. RAT #1 Acid Base Intro Basics
You will take the quiz twice.
– First time – Complete the Form Below individually –
– Second time – Complete with a group using the Group Form
I will make breakout rooms in Zoom.
Individual RAT form: NOT OPEN UNTIL GAME TIME!
e009 blank ticket.pdf
View Download
Acid/Base Skills Individual RAT 1:
GROUP RAT: You will do this as a group and discuss your answers to come up with a consensus!
Please move to the week 10 page to view the homework.
11/10 – Tuesday- “D” Day –period 2,3 (Lab) – I 2(B,D) 3(D) AP CHEMISTRY
-period 2,3 (Lab) – R 2(B,D) 3(D) REMOTE INSTRUCTION
-period 4 – I 3(B) 4(B,D) AP CHEMISTRY
-period 4 – R 3(B) 4(B,D) REMOTE INSTRUCTION
The Blue Team and the Orange Team are Remote today.
Period 2 Zoom Stream info:
Time: Nov 10, 2020 08:00 AM Eastern Time (US and Canada)
Join Zoom Meeting
https://us02web.zoom.us/j/86032902071?pwd=US8xVjduK1NPMkJocHdVRXZteERhQT09
Meeting ID: 860 3290 2071
Passcode: 9tMH48
One tap mobile
+16465588656,,86032902071#,,,,,,0#,,200320# US (New York)
Period 4 Zoom Stream info:
Topic: AP Chemistry – 11.10 – Period 4
Time: Nov 10, 2020 09:30 AM Eastern Time (US and Canada)
Join Zoom Meeting
https://us02web.zoom.us/j/83150824415?pwd=Q05Wc0hRbzVlSnFSSTlPMFJ1SVlXdz09
Meeting ID: 831 5082 4415
Passcode: 6Kkk9B
One tap mobile
+16465588656,,83150824415#,,,,,,0#,,675430# US (New York)
Period 2, Period 4: Class lessons
1. Identifying Acid base definitions:
Back to the pumpkin Stoichiometry from last week:
|
C2H2 (g) + 5/2O2 (g) —> 2CO2 (g) + H2O (g) 0r
2C2H2 (g) + 5 O2 (g) —> 4CO2 (g) + 2H2O (g)
|
The chemical reaction that exploded the pumpkin was combustion or redox but the reaction the made fuel, C2H2 was?
What kind reaction is this?
CaC2 (s) + 2H2O (l) —–> C2H2 (g) + Ca(OH)2
2. Review of Last nights homework –
a) acid base stoichiometry neutralization reactions – last nights homework.
b) net ion reactions
3. Indicator demo with Phenolphthalein –
Period 3:
1. RAT #1 Acid Base Intro Basics
You will take the quiz twice.
e009 blank ticket.pdf
– First time – Complete the Form Below individually –
– Second time – Those at home I will make breakout rooms in Zoom.
Individual RAT form: NOT OPEN UNTIL GAME TIME!
GROUP RAT: You will do this as a group and discuss your answers to come up with a consensus!
Please make multiple submissions until you get a 100. ONLY 1 person from each group will fill this out. Everyone gets the same grade in the group. The more submissions the lower your grade.
You must work from the break out rooms I assign.
Please move to the week 10 page to view the homework.
11/12 – Thursday “A” Day – period 2,3 (Lab) – I 2(A,C) 3(A) AP CHEMISTRY
–period 2,3 (Lab) – R 2(A,C) 3(A) REMOTE INSTRUCTION
-period 4 – I 3(C) 4(A,C) AP CHEMISTRY
-period 4 – R 3(C) 4(A,C) REMOTE INSTRUCTION
The Red team and the Green team are Remote today.
Red team – period 2,3 Zoom info:
Topic: AP Chemistry – 11.12 – period 2,3
Time: Nov 12, 2020 08:00 AM Eastern Time (US and Canada)
Join Zoom Meeting
https://us02web.zoom.us/j/84978075821?pwd=U21VSmo1U3ZQcS9qWWFyZU1PRVVOdz09
Meeting ID: 849 7807 5821
Passcode: FX1csY
One tap mobile
+16465588656,,84978075821#,,,,,,0#,,259593# US (New York)
Green team – period 4 Zoom info:
Topic: AP Chemistry – 11.12 – Period 4
Time: Nov 12, 2020 09:30 AM Eastern Time (US and Canada)
Join Zoom Meeting
https://us02web.zoom.us/j/81282975983?pwd=MEJBTWs5VmwwOGsxWFJTUzljRy92Zz09
Meeting ID: 812 8297 5983
Passcode: 1W95Pk
One tap mobile
+16465588656,,81282975983#,,,,,,0#,,442503# US (New York)
Period 2,3, Period 4: Class Lesson – Blue and Orange teams take RAT # 2 today.
1. The RED and GREEN team will take the RAT IN CLASS Tomorrow.
You guys at home should make sure you review the 1st RAT with video if you have not already.
The RAT # 2 will count as the final test of the quarter.
It will contain the same information as RAT #1 BUT it will include more ACID/BASE Stoichiometry Questions
that cover
a) Net ion acid/base reactions
b) Stoichiometry Acid base questions
These two worksheets cover these additional skills:
Stiochiometry 5a – Acid Base Reactions new Key.pdf
RAT # 1 Review:
2. Please try questions 1a, 2a, and 3a ONLY! Then please follow along with me with the Acid Base Lab Titration Graph Questions.pdf worksheet below to about 14:15 of the lecture below. This means you will only complete questions 1a – 1c ONLY!
Lecture on classwork problem : Acid Base Lab Titration Graph Questions.pdf
Please move to the week 10 page to view your homework.
I will update it later..
11/13 – Friday- “B” Day –period 2, – I 2(B,D) 3(D) AP CHEMISTRY
– period 2, – R 2(B,D) 3(D) REMOTE INSTRUCTION
-period 3,4 (LAB) – I 3(B) 4(B,D) AP CHEMISTRY
-period 3,4 (LAB) – R 3(B) 4(B,D) REMOTE INSTRUCTION
Friday the 13th!
The Blue team and the Green team are Remote today.
Period 2 Zoom:
Topic: AP Chemistry 11.03 period 2
Time: Nov 13, 2020 09:00 AM Eastern Time (US and Canada)
Join Zoom Meeting
https://us02web.zoom.us/j/86834735067?pwd=L3FmdUxlWVl1WDZBM3RuU0VBRElHUT09
Meeting ID: 868 3473 5067
Passcode: t0D13V
One tap mobile
+16465588656,,86834735067#,,,,,,0#,,546441# US (New York)
Period 3 Zoom:
Topic: AP Chemistry – 11.13 – Period 3,4
Time: Nov 13, 2020 09:00 AM Eastern Time (US and Canada)
Join Zoom Meeting
https://us02web.zoom.us/j/84620107307?pwd=eU5WQ01jejI4dldOZlF0dC92djBSdz09
Meeting ID: 846 2010 7307
Passcode: 5Ffn31
One tap mobile
+16465588656,,84620107307#,,,,,,0#,,485470# US (New York)
Period 2, Period 3: Class Lesson – RED and GREEN teams take RAT # 2 today.
1. REMOTE Students Take RAT 2. Using the Rat Form Below:
2. Please try questions 1a, 2a, and 3a ONLY! Then please follow along with me with the Acid Base Lab Titration Graph Questions.pdf worksheet below to about 14:15 of the lecture below. This means you will only complete questions 1a – 1c ONLY!
Lecture on classwork problem : Acid Base Lab Titration Graph Questions.pdf
Individual RAT FORM and make multiple subs until you get a 100%:
Period 4: – Recorded and Streamed
Download Logger Pro from self- service!
1. Lab 10 – virtual – Strong Acid / Strong Base review.
a) Net ion reaction
b) Equivalence Point identified graphically
c) Molarity of HCl (analyte) calculated from the equivalence point.
New:
d) Identify the endpoint using pH ranges from Table M
e) verify the initial pH
f) verify the final pH
Lab 10 INSTRUCTIONS- Grading Rubric posted below in the homework section.
2.
Lab 11 titration –
Lab 11 – Weak Acid (HC2H3O2) titrated with 0.12M Strong Base, NaOH
4. Compare and contrast both graphs, and I will walk you through how to
complete this Lab.
What is similar and dissimilar with these titrations?
a) Starting pH b) Ending pH c) size of the asymptote? d) pH at equivalence e) Buffer region
What is new with this titration?
a) How to determine the Ka from the half equivalence point
b) Describing the pH at the equivalence point – Why is not at 7? We will calculate this in the spring.
Henderson Hasselbalch Derivation – to obtain the Ka!!!!