Select Page

Q2: Week 10  – 1/24 – 1/28

                                                                                                                                                                       Jump toTuesday,   Wednesday,  Thursday,  Friday                                                                                                                  ______________________________________________________________

1/24 – Monday – B Day – 2, 3b/4 Lab           

Main focus –                                                                                                                                                         
                                                  

    a) To Review the Real Errors in Lab 19.  When did the K change the most?

    b) To introduce Van der Waals Equation

 

Period 2:  – 

1: Results of our Graham’s Law of Effusion Demo:

 
2. Kinetic Molecular Theory – Part B – Limitations to the Gas Laws – Real vs. Ideal Student
    A) Van der Waals Equation –  An equation created to “fix” the problems with gas law calculations.
 
                1. Pressure is less than what is calculated for in Real Gases
 
                2. Volume is greater than what is calculated for in Real Gases

 

3. Crush the Can demo – water vapor creating the vacuum!

4. Absolute Zero demonstrator with liquid Nitrogen Demo. 

    – Calculate the new Pressure using the combined gas law. The calculated result will be greater than the pressure measured due to the Real Gas behavior of the atmospheric gases. 

                      –  N2 (l) – boiling point  =  -196 degrees Celsius or 77 Kelvins.
 
                         –  O2 (l) – boiling point =  -183 degrees Celsius or 90 Kelvins.
 

 – Clearly the boiling point or the condensation point of oxygen (-183 ° C)  is above the boiling point of nitrogen (-196 ° C). This means that liquid nitrogen is cold enough to condense oxygen to a liquid. If gases condense then they Have REAL significant Intermolecular Attractions.

Period 3/4:  – 

1.  Same as 1 – 4 above.

2. Lab 19 review of data.

3.We may make some liquid oxygen!

Kinetic Molecular Theory Presentation:

Boyles Law and Real Gas Behavior:

______________________

 
Real Gas Behavior NOTES : 

____________________

1/24 – Monday Homework: –                                                                                                                                                                                                                           

1.  Please complete the first side of the Gas law worksheet 8 – Van der Waals.pdf worksheet and review with the key.
 
Gas law worksheet 8 – Van der Waals.pdf
 
Gas law worksheet 8 – Van der Waals Key.pdf

 

 _________________________________________________________________________________________________________________________

1/25 – Tuesday  – A Day – A Day – 2/3a Lab, 4 

Main focus –                                                                                                                                                         
                                                  

    a) To complete the discussion of the Van der Waals Equation

    b) To identify that the measured Pressure will be lower than calculated in the Ideal                 Gas Law equation.

    c) To identify that the measured Volume will be higher than calculated in the Ideal                 Gas Law Equation

   

 Period 2/3: 

1.  Complete the Slides of the Kinetic Molecular Theory Presentation for the Van der Waals Equation.

2.   REAL GAS DEMO’s – Gold fish, liquid Oxygen, classroom fog demo

3. Applications – Alaska pipeline in vapor pressure presentation below.

                                                                                                                                   

Period 4: 

 
1. Review the Van der Waals equation homework and equation.
   
2.   REAL GAS DEMO’s – Gold fish, liquid Oxygen, classroom fog demo
 
3. Applications – Alaska pipeline in vapor pressure presentation below.

 

                                                                                  

______________________

 
Real Gas Behavior NOTES : 

Use For Phase Diagram lesson:

 School Bus Demolition:  (school busses acting as REAL GASES!)

 Liquidfying Oxygen (condensation of oxygen) by liquid Nitrogen.

liquid oxygen – Rate of reaction 

____________________

1/25 – Tuesday Homework: –                                                                                                                                                                                                                           

1.  Please complete Real Gas and Review form.

 
1:  Kinetic Molecular Theory Form::

End of Tuesday!

Van der Waals Equation Review (yesterday’s lecture).

Yesterday’s Liquid Oxygen demo with period 2/3.

 _____________________________________________________________________________________________________________________

1/26 – Wednesday – B Day – 2, 3b/4 Lab 

Main focus –                                                                                                                                                         
                                                  

    a) To complete Lab 20 – Mg and HCl Stoichiometry

    b) To review Gas laws Stoichiometry with manometer, Daltons Law, and Real gas                  behavior through a gas law procedure.

Period 2:  

  1.  Lab 20 – Molar volume of Hydrogen.

                                                                                       

Period 3/4:

1.  Lab 20 – Molar volume of Hydrogen.                                                                                                                         

 

______________________

Lab 20 – The Molar Volume of Hydrogen

Lab 20 – Molar Volume of Hydrogen .pdf
View Download

        
Vapor Pressure of Water table.pdf
View Download 
     
Here is the unbalanced chemical reaction (single replacement reaction).
 
Mg (s)   +    HCl (g)   —>   MgCl2 (aq)    +  H2(g)
 
Dilute Excess HCl will be added to a Eudiometer tube with a small mass of Magnesium secured by a copper wire.  Only the the Mg will react as only the Mg reacts spontaneous with protons from the HCl OR the proton is a strong enough oxidation agent that can transfer electrons from the metal.  The copper will not react as per the Standard Reaction Potential values posted below: 
 
Cu+2   +     2e-    –>  Cu (s)        0.34 v
2H+     +     2e-    –>  H2 (g)        0.00 v 
Mg+2   +    2e-    –>  Mg (s)       -2.37 v
  
 
The copper will that will affix the magnesium will not react in the acid and thus all the hydrogen produced will be produced by the oxidation of the Mg metal.
     
Lab 20 – data – 
 
Samantha and Sydney lab data:  80.9 ml of volume of gases, 18.8 cm of water suspended
Rosalie, Meghan, Alec: 77.60 ml of gases, 23.8 cm of water suspended     
Ben’s group: 69.0 ml, 20.2 cm of water suspended 

 

Molar Volume of Hydrogen Calculations:

______________________

1/26 – Wednesday Homework: – 

                                                                                                                                                                                                                               
1. Please complete the Lab 20 calculations using the video posted above. There is no Conclusion!
   
I will post a video on how to complete the lab calculations up to the molar volume part.
This will be posted soon. 
 
 Period 3/4 class Only:
2. Please complete the first 2 pages of the Gas Law Test (part 2). This part is due tomorrow.
 

                                                                                

 _________________________________________________________________________________________________________________________

1/27 – Thursday – A Day – 2/3a Lab, 4 

Main focus –                                                                                                                                                         
                                                  

    a) To Complete the calculations on the Molar Volume of Hydrogen Lab

    b) To Begin the Gas Law Test

Period 2/3:  – 

1Review the Molar Volume of the Hydrogen Lab calculations, specifically on the percent yield.

2.  Error analysis of the Lab 20.   
   
3.  Gas Law Test. 

Period 4:  – 

1.  Review the Molar Volume of the Hydrogen Lab calculations, specifically on the percent yield.

2.  Error analysis of the Lab 20.   
  
3.  Gas Law Test. 
 

                                                                                                          

_____________________

1/27 – Thursday Homework: – 

       
Period 2/3:                                                                                                                                                                                                         1. Please Complete a take-home part of the Gas Law Test.
 
2. Study Gas Laws as the Test will continue tomorrow.
                                                                                 

_________________________________________________________________________________________________________________________

1/28 – Friday – B Day – 2, 3b/4 Lab 

Main focus –                                                                                                                                                         
                                                  

    a) To complete the gas law test

 

Period 2:  – 

1.  Continue and complete the Gas Law test.

Period 3/4:  – 

1.  Continue and complete the Gas Law test.

 

 

_____________________

1/28 – Weekend Homework: – 

                                                                                                                                                                                                                               

1. Watch out for the depositioning of water due to the REAL gas behavior of water vapor in the clouds.