- The Kw of water at 298 K is equal to
(A) 1 × 10−7
(B) 1 × 10−17
(C) 1 × 10−14
(D) 1 × 10−1
- The pH of a solution that has a hydrogen ion concentration of 1 × 10−4
mole/liter is
(A) 4
(B) −4
(C) 10
(D) −10
- The pH of a solution that has a hydroxide ion concentration of 1 × 10−4
mole/liter is
(A) 4
(B) −4
(C) 10
(D) −10
- A small value for K, the equilibrium constant, indicates that
(A) the concentration of the un-ionized molecules must be relatively
small compared with the ion concentrations
(B) the concentration of the ionized molecules must be larger than the
ion concentrations
(C) the substance ionizes to a large degree
(D) the concentration of the un-ionized molecules must be relatively
large compared with the ion concentrations
- In the Haber process for making ammonia, an increase in pressure favors
(A) the forward reaction
(B) the reverse reaction
(C) neither reaction
- A change in which of these conditions will change the K of an equilibrium
