Reference no: EM132418331

1) For the reaction: 3 H2(g) + N2(g) <--> 2 NH3(g), the equilibrium expression is: 

K = [H2]3[N2] / [NH3]2

True

False

2) For the reaction: CaCO3(s) <--> CaO(s) + CO2(g), the equilibrum expression is:

K = [CaO][CO2] / [CaCO3]

True

False

3) The equilibrium expression for the reaction: NH3(g) + H2O(l) <--> NH4+(aq) + OH-(aq) is:

K = [NH4+]*[OH-] / [NH3]

False

True

4) For the reaction: 3 H2(g) + N2(g) <--> 2 NH3(g), the concentrations at equilbrium were [H2] = 0.10 M, [N2] = 0.10 M, and [NH3] = 5.6 M. What is the equilibrium constant (K)?

K = 560

K = 3.1 x 10^5

K = 5.6 x 10^-4

K = 1.8 x 10^-3

5) For the reaction: N2O4(g) <--> 2 NO2(g), the equilibrium constant (K) = 6.5. What could be the possible equilibrium concentrations of the substances?

[N2O4] = 3.4, [NO2] = 2.0

[N2O4] = 2.0, [NO2] = 3.6

[N2O4] = 2.5, [NO2] = 2.6

[N2O4] = 3.0, [NO2] = 3.0