A. Use the equation below to answer questions 8-9.
2 HI(g) H ()+1, (g)
8. If the volume of the system is increased at constant temperature, relative to the original
equilibrium mixture, which of the following will be true when equilibrium is
reestablished?
The concentration of HI will increase and the concentrations of H, and I will
decrease
b. The concentration of HI will decrease and the concentrations of H, and I, will
I
increase
The concentrations of all three species will be lower
d. The concentrations of all three species will be unchanged
9. If a catalyst is added to the system, relative to the original equilibrium mixture, which of
the following will be true when equilibrium is reestablished?
a. The concentration of Hl will increase and the concentrations of H, and I will
decrease
b. The concentration of HI will decrease and the concentrations of H, and I, will
increase
c. The concentrations of all three species will be lower
d. The concentrations of all three species will be unchanged
C.