Thursday Jan 27 A-day

Regular Chemistry
Starter -
Balance and use the following information to find ∆H, ∆S, ∆G, and T.
C2H2 (g) + O2 (g) --> CO2 (g) + H2O (g)
∆H +226.7 kJ 0.0 kJ -393.5 kJ -241.8 kJ
S +0.2008 kJ/K +0.2050 kJ/K +0.2136 kJ/K +0.1887 kJ/K
∆G +209.2 kJ 0.0 kJ -394.4 kJ -228.6 kJ

Corrected: Assign 3.3

Lecture: Activation Curve, Le Chatlier’s Principle, "Kool-aide" rules (the five factors that influence the reaction rate)

Hindenburg Video

Demo: Lycopodium powder

Homework - Worksheet 3.4 on H, G and S

A site to help you with thermochemistry.

Summary -
1.Thinking of the above reaction which way will the reaction
go if…
a. If heat is put into the reaction?
b. If pressure is increased?
c. If carbon dioxide is removed?
d. If water is put into the reaction?
2.Given the following information draw an activation curve, label and
give ∆E’, and Ea’. ∆E = -30 kJ and Ea = 50 kJ

Student journal was turned in.

Honors Chemistry
Starter -
Balance and use the following information to find ∆H, ∆S, ∆G, and T.
C2H2 (g) + O2 (g) --> CO2 (g) + H2O (g)
∆H +226.7 kJ 0.0 kJ -393.5 kJ -241.8 kJ
S +0.2008 kJ/K +0.2050 kJ/K +0.2136 kJ/K +0.1887 kJ/K
∆G +209.2 kJ 0.0 kJ -394.4 kJ -228.6 kJ

Corrected: Assign 3.3

Lecture: Keq, Activation Curve, Le Chatlier’s Principle, "Kool-aide" rules (the five factors that influence the reaction rate)

Hindenburg Video

Demo: Lycopodium powder

Homework - Worksheet 3.4 on H, G and S

A site to help you with thermochemistry.

Summary -
1. Write the Keq for the following equation:
2 C2H2 (g) + 5 O2 (g) <--> 4 CO2 (g) + 2 H2O (g) + 2511 kJ
2.Thinking of the above reaction which way will the reaction
go if…
a. If heat is put into the reaction?
b. If pressure is increased?
c. If carbon dioxide is removed?
d. If water is put into the reaction?
3.Given the following information draw an activation curve, label and
give ∆E’, and Ea’. ∆E = -30 kJ and Ea = 50 kJ


AP Chemistry -
Starter -
Balance and use the following information to find ∆H, ∆S, ∆G, and T.
C2H2 (g) + O2 (g) --> CO2 (g) + H2O (g)
∆H +226.7 kJ 0.0 kJ -393.5 kJ -241.8 kJ
S +0.2008 kJ/K +0.2050 kJ/K +0.2136 kJ/K +0.1887 kJ/K
∆G +209.2 kJ 0.0 kJ -394.4 kJ -228.6 kJ

Corrected 3.4 bookwork and worksheet 3.2 B and C

Redo 3.2 lab and did 3.3 lab READ YOUR LAB!!!

Homework: 3.5 bookwork (Kotz- on calendar) and 3.2 worksheet D

Summary - None today. No time. Finish labs next time. Turn in Starter.