MQ-2 on Monday, Feb. 21 at 6:30 pm Covering Chapters 13 (osmosis…), 14, and 15. Review session on Sunday, Feb 20 at 1:00 pm – 3:00 pm in Stillman 100. Alternate Exam time for students with scheduled class conflicts: 5:00 – 6:20 pm in 159 MacQuigg Labs sign up by email to mathews.
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MQ-2 on Monday, Feb. 21
at 6:30 pm
Covering Chapters 13 (osmosis…), 14, and 15
Review session on Sunday, Feb 20
at 1:00 pm – 3:00 pm
in Stillman 100
Alternate Exam time for students
with scheduled class conflicts:
5:00 – 6:20 pm in 159 MacQuigg Labs
sign up by email to mathews
Second MQ exam – Chem 122
Monday, 21 February
Christopher Beekman*250 Knowlton Hall
Mark Lobas180 Hagerty Hall
All Others131 Hitchcock Hall
Knowlton Hall - 2073 Neil Avenue
Hitchcock Hall - 2070 Neil Avenue
Hagerty Hall - 1775 College Rd
Completion of Chapter 15:
15.6Le Châtelier’s Principle
Change in Reactant or Product Concentrations
Effects of Volume and Pressure Changes
Effect of Temperature Changes
The Effect of Catalysts
Recall from last week:
CO(g) + Cl2(g) = COCl2(g)
2 H2S(g) = 2 H2(g) + S2(g)
C(s) + S2(g) = CS2(g)
C(s) + CO2(g) = 2 CO(g)
What happens if we increase PT ???
Consider effect of Change in Temperature
CO + 3 H2 = CH4 + H2O ΔH = -206 kJ/mol
CO + 3 H2 = CH4 + H2O + 206 kJ
therefore incr temp shifts eq to left!
Where Kf is the equilibrium constant at temperature Tfand
Kiis the equilibrium constant at temp. Ti .
Example: Consider a reaction which has Keq = 1.38 x 105 at 800 K
and Keq = 4.9 x 1027 at 298 K.
What is ΔH for the reaction?