- For the reaction H2(g)+CO2(g)⇌H2O(g)+CO(g)H_2(g) + CO_2(g) \rightleftharpoons H_2O(g) + CO(g)H2(g)+CO2(g)⇌H2O(g)+CO(g), if the concentration of H2OH_2OH2O is increased, the equilibrium will:
a) Shift to the right
b) Shift to the left
c) Remain unchanged
d) Increase the concentration of CO2CO_2CO2
Answer: b - For the reaction 2NO(g)+O2(g)⇌2NO2(g)2NO(g) + O_2(g) \rightleftharpoons 2NO_2(g)2NO(g)+O2(g)⇌2NO2(g), decreasing the volume of the container will:
a) Shift the equilibrium to the right
b) Shift the equilibrium to the left
c) Remain unchanged
d) Increase the concentration of NONONO
Answer: a - The equilibrium constant KpK_pKp for a gaseous reaction is 1.0 at 300 K. If the volume of the container is halved, the new value of KpK_pKp is:
a) 2.0
b) 0.5
c) 1.0
d) 4.0
Answer: c - For the reaction H2(g)+I2(g)⇌2HI(g)H_2(g) + I_2(g) \rightleftharpoons 2HI(g)H2(g)+I2(g)⇌2HI(g), if the volume of the container is decreased, the equilibrium will:
a) Shift to the right
b) Shift to the left
c) Remain unchanged
d) Decrease the concentration of H2H_2H2
Answer: c - In the equilibrium N2O4(g)⇌2NO2(g)N_2O_4(g) \rightleftharpoons 2NO_2(g)N2O4(g)⇌2NO2(g), if the temperature is increased, the equilibrium will:
a) Shift to the right
b) Shift to the left
c) Remain unchanged
d) Increase the concentration of NO2NO_2NO2
Answer: a - The equilibrium constant KcK_cKc for the reaction H2(g)+Cl2(g)⇌2HCl(g)H_2(g) + Cl_2(g) \rightleftharpoons 2HCl(g)H2(g)+Cl2(g)⇌2HCl(g) will:
a) Increase if the temperature is decreased
b) Decrease if the temperature is increased
c) Remain unchanged if the concentration of HCl is increased
d) Change if the pressure is increased
Answer: b - For the reaction 2NO(g)+O2(g)⇌2NO2(g)2NO(g) + O_2(g) \rightleftharpoons 2NO_2(g)2NO(g)+O2(g)⇌2NO2(g), increasing the concentration of NONONO will:
a) Shift the equilibrium to the right
b) Shift the equilibrium to the left
c) Increase the value of KcK_cKc
d) Decrease the concentration of NO2NO_2NO2
Answer: a - In the equilibrium N2(g)+3H2(g)⇌2NH3(g)N_2(g) + 3H_2(g) \rightleftharpoons 2NH_3(g)N2(g)+3H2(g)⇌2NH3(g), increasing the pressure will:
a) Shift the equilibrium to the right
b) Shift the equilibrium to the left
c) Remain unchanged
d) Increase the concentration of N2N_2N2
Answer: a - For the reaction 2SO2(g)+O2(g)⇌2SO3(g)2SO_2(g) + O_2(g) \rightleftharpoons 2SO_3(g)2SO2(g)+O2(g)⇌2SO3(g), decreasing the pressure will:
a) Shift the equilibrium to the right
b) Shift the equilibrium to the left
c) Increase the value of KcK_cKc
d) Decrease the concentration of SO3SO_3SO3
Answer: b - For the reaction H2(g)+I2(g)⇌2HI(g)H_2(g) + I_2(g) \ right left harpoons 2HI(g)H2(g)+I2(g)⇌2HI(g), if the concentration of HI is doubled, the equilibrium will:
a) Shift to the right
b) Shift to the left
c) Remain unchanged
d) Decrease the concentration of H2H_2H2
Answer: b
