Q1 : Week 8 – 10/17 – 10/21
Jump to: Tuesday, Wednesday, Thursday, Friday
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If you have not already please join the REMIND for this class.
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10/17 – Monday – B Day – 2, 3b Lab/4 Jump to: Monday Homework
Main focus –
a) To perform Lab 5 and Lab 6 in determining the percent by mass or the empirical formula (in hydrates).
b) To complete the error analysis of the hydrate labs
c) Complete Mole / Particular concept presentation
Period 2:
1. Lab 6 – Empirical Formula of magnesium hydrate –
a) Setup – and complete first heating
while heating -we will accomplish 2,3, and 4 below…
2. HW review – connected the problem concepts with stoichiometry of compounds and stoichiometry of chemical reactions
empiri&molec ditto hydrate combination KEY p.pdf
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3. Mole concept lesson – diagram, conversions
Period 3b, 4:
1. Lab 5 complete with percent error.
2. Lab 6 begin
3. Same 1 – 5 in period 1.
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3b/4 Lab – Lab 5 – Percent mass of water in a Hydrate
LAB 5 – copper sulfate pentahydrate lab.pdf
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*Determine the chemical formula of a hydrate:
LAB 6 – Empirical Formula analysis of Hydrate.pdf

Because of the conservation of mass by Antoine Levassuer, the mass of water that is released from the crystal (hydrate) is the same mass that was is in the crystal. THus the moles of water lost is the water that are in the crystal (in the formula ) .
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10/17 – Monday’s Homework: –
a) Lecture 1.1 : Molarity of ions
b) Lecture 1.2 : Preciptation analysis
End of Monday..
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10/18 – Tuesday – A Day – 2, 3a Lab/4
I will be absent today due to taking my son on a college visit. Please view and complete the activities posted below.
a) To complete Hydrate Labs and the error analysis of the hydrate labs
b) To begin the conservation of mass presentation – balancing chemical reactions, Stoichiometry of chemical reactions using the mole ratios that we get from balancing
Period 2/3a, 4 – Today’s assignments (which is also your homework!) – YOU MAY WORK TOGETHER!!!!
2. Please complete the take-home quiz ( Analytic Chemistry Quiz 1 ) ON the worksheet that was given out today or posted below:
I have a stack of hard copies of the quiz up on my teaching stand. Use it to work on the quiz AND THEN add your answers into the form. YOU will NOT be handing anything in.
You will be submitting a form only.
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10/18 – Tuesday’s Homework: –
2. Please complete the take-home quiz ( Analytic Chemistry Quiz 1 ) ON the worksheet that was given out today or posted below:
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End Of Tuesday!
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10/19 – Wednesday – B Day – 2, 3b Lab/4
Period 2, 3b –
2. Type of Chemical Analysis we have studied:
a) % by mass – (Hydrate Labs)
b) combustion analysis
c) precipitation analysis – ( lab we will complete next week)
3. HW review – Stoichiometry of ions, precipitation analysis
Analytical Chemistry II KEY NEW – Mol,Dilution, precipitation analysis.pdf
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4. Quiz / Form review:
Analytical quiz 1 – Hydrate, precipitation, and Stioch KEY.pdf
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5. Lab 7 – Empirical formula of copper iodide – (adding mass lab) – INTRODUCTION
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WE will attack the Ratios of atoms and ions in chemical formulas and Ratios chemicals in chemical equations!
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3b/4 Lab – Lab 7 – Synthesis of Copper Iodide (and determination of the empirical Formula of copper iodide)
Lab 7 – Synthesis of Copper Iodide.pdf
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This Lab will be our first formal lab. I am giving out a data worksheet to keep you organized in your data collection but it will not be handed in. You will write a data section and calculation section in your formal lab write-up that will be in a google doc that will be shared to you in next couple of days.
Cu (s) + I2 (g) —> Cu? I?
Objectives: 1. To determine the empirical formula of the salt (product).
2. To determine the percent yield of the salt.
We will take notes on how to perform this lab.
Lab 7 : Synthesis of Copper Iodide
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10/19 – Wednesday Homework: –
1. Please view Lecture 1.3 with the worksheet below.
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1: AP Lecture 1.3 : Stoichiometry and percent yield
Jump to: Thursday Homework
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10/20 – Thursday – A Day – 2, 3a Lab/4
c) To synthesize copper iodide and determine its empirical formula.
Period 2 ,3a –
1. Review the concept of % yield from the quiz from Wednesday and homework.
2. errors in Hydrates Labs – Note-taking on Lab 7 –
3. Run the lab and gather Data –
4. Conservation of Mass – Balancing Chemical Reactions – Module 7!
Period 4 –
3. Run the lab and gather Data – Lab 7
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2,3a Lab /4 – Lab 7 – Synthesis of Copper Iodide (and determination of the empirical Formula of copper iodide)
Lab 7 – Synthesis of Copper Iodide.pdf
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This Lab will be our first formal lab. I am giving out a data worksheet to keep you organized in your data collection but it will not be handed in. You will write a data section and calculation section in your formal lab write-up that will be in a google doc that will be shared to you in next couple of days.
Cu (s) + I2 (g) —> Cu? I?
We now know that Copper has 2 oxidation states, thus we are trying to identify if Cu lost 1 electron or 2 electrons?
Objectives: 1. To determine the empirical formula of the salt (product).
2. To determine the percent yield of the salt.
We will take notes on how to perform this lab.
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10/20 – Thursday Homework: –
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1: Lecture 1.5 : Molarity Stoichiometry
2 : Lab 7 review – This might help with your calculations!
End of Thursday!
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10/21 – Friday – B Day – 2, 3b Lab/4
b) Observe the hydrogen explosions with incorrect ratios and incorrect ratios.
Period 2 –
1. Complete the data collection of Lab 7 –
a) Scrape off the product from the copper and mass out the final mass of the dry and clean copper.
2. Conservation of Mass presentation –
a) Flaming Flask Demo – implications to the Limiting Reagent
– incomplete and complete combustion
1. Conservation of Mass presentation –
a) Flaming Flask Demo –
– incomplete and complete combustion – implications to the Limiting Reagent
When do we make good cake?
Conservation of Mass Notes:
A. Flaming Flask Demo/Whoosh Demo:
This means 2 H2 molecules per 1 O2 is needed to maximize the reaction and thus maximize the energy released. If this ratios in the reaction are not 2 to 1 then the reaction will be less efficient with some unreacted reactants and a lower amount of energy released. Sometime the reaction will not even run at all if the ratios are poor.
Conservation of Mass Presentation:
Last Year – Period 2 : Hydrogen Balloon Explosion Comparison:
2 H2 (g) + O2 (g) —> 2 H20 + Energy
Last Year – Period 4 : Hydrogen Balloon Explosion Comparison:
2 H2 (g) + O2 (g) —> 2 H20 + Energy
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10/21 – Friday’s Homework: –
2. Please view the Limiting reagent Lecture that teaches the chart method of calculating the limiting reagent. Complete side ONLY with me. How could this method made last night’s homework easier?
3. Please complete Stiochiometry 3 – ICE Table Molarity Salsa.pdf which is really the second problem the homework Last night (Stiochiometry 3 – Molarity limiting reagent.pdf). So please redo that limiting reagent problem using the ICE Table method. Don’t be mad that this way is simpler!!!
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5. Please Complete the following this weekend on the Formal lab write-up:
I have posted the requirements and an example of a formal written lab below the videos below..
a) Title Page
b) Background
c) Materials
d) Procedure
You will have a link to a shared doc for this lab. Please use it to start the lab.
I have posted the requirements and an example of a formal written lab below the videos below..
1 : The Flaming Tube Demo – for the lecture below!
2 : Limiting Reagent Lecture – Teaches the chart method!
3 : Lab 7 review – This might help with your calculations!
End of week 8 well sort of unless you need to read the lab requirements below…
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Lab 7 – Synthesis of Copper Iodide (and determination of the empirical Formula of copper iodide)
Lab 7 – Synthesis of Copper Iodide.pdf
View Download
This Lab will be our first formal lab. I am giving out a data worksheet to keep you organized in your data collection but it will not be handed in. You will write a data section and calculation section in your formal lab write-up that will be in a google doc that will be shared to you in next couple of days.
Cu (s) + I2 (g) —> Cu? I?
Objectives: 1. To determine the empirical formula of the salt (product).
2. To determine the percent yield of the salt.
The lab will be written up in a shared google doc according the following rubric: