lecture 7-1 equilibrium constant.notebook · lecture 71 equilibrium constant.notebook 1 july 25,...
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Lecture 71 Equilibrium Constant.notebook
1
July 25, 2012
Jan 110:03 PM
1 Chemical equilibrium may be used to describe
A chemical reactions
B acids and bases
C solublility
D A and C
E A, B, and C
Jan 110:06 PM
2 A chemical system in equilibrium will
A have the same concentrations of all products and reactants
B form more products if the temperature is increased
C have a specific ratio of product to reactant concentrations
D not have any precipitates
E represent a spontaneous chemical process
Lecture 71 Equilibrium Constant.notebook
2
July 25, 2012
Jan 110:08 PM
3 Which is an appropriate formulation of the equilibrium law for the reaction
A
B
C
D
E
MgCO3 (s) + 2HCl (g) MgCl2(s) + CO2(g) + H2O(l)
Lecture 71 Equilibrium Constant.notebook
3
July 25, 2012
Jan 110:18 PM
4 If units were used with the equilibrium constant, Kc, for the following reaction:
CH4 (g) + 3O2(g) CO2(g) + 2H2O(g)
they would be
A M2
B M2
C M
D M1
E M3
Lecture 71 Equilibrium Constant.notebook
4
July 25, 2012
Jan 110:23 PM
5 A reaction has a very large equilibrium constant of 3.3x1013. Which statement is NOT true about this reaction?
A The reaction is very fast
B The reaction is essentially complete
C The reaction is spontaneous
D The equilibrium constant will change if the temperature is changed
E The products will yield very little reactant
Jan 110:44 PM
6 The reaction 2NO2 (g) N2O4 (g) has an equilibrium constant of 4.5x103 at a certain temperature. What is the equilibrium constant of 2N2O4 (g) 4NO2 (g)?
A 4.5x103
B 9.0x106
C 2.2x104
D 2.0x107
E 4.9x108