14. Consider the following equilibrium: PCl 3(g) + Cl 2(g) PCl 5(g) If PCl 5 is

Question

14.       Consider the following equilibrium:        PCl3(g)   +   Cl2(g)      PCl5(g)

If PCl5 is put in a container, how will the reaction rates change as the system approaches equilibrium?

Forward Rate               Reverse Rate

A.        increases                      increases

B.         increases                      decreases

C.        decreases                     decreases

D.        decreases                     increases

15.       Consider the following equilibrium system: H2O(g)   +  CO(g)    CO2(g)    +   H2(g)

2.00 mole of CO2 and 2.00 mole of H2 are placed in a container and the system approached equilibrium.

The following changes occur:

            [CO2]               [H2]                  [CO]

A.        increases          decreases         decreases

B.         increases          increases          decreases

C.        decreases         increases          increases

D.        decreases         decreases         increases

16.       For the equilibrium system below:

Zn(s)   +   CuSO4(aq)        Cu(s)   +   ZnSO4(aq)

We would know the system is at equilibrium because:

A.        [Cu2+]    =  [Zn2+]

B.         Cu(s)     =     Zn(s)

C.        the mass of Cu(s) remains constant.

D.        the mass of the entire system remains constant.

Explanation / Answer

14. D

15.D

16. D

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