each. Partial credit may be awarded if some work or comments are shown.
C, aqueous solutions and K
1.00 x 10
unless otherwise stated.
1. Hydrofluoric acid, HF, is a weak acid with K
6.8 x 10
Calculate the pH of a 0.200 M solution of
At a temperature where K
is 1.4 x 10
, a solution has a pH of 7.00.
What is true of this solution?
(circle all that apply)
3. A 0.00100 M solution of lactic acid is prepared in ultrapure water. From high precision conductivity
measurements, the acid is found to be 30.90 % ionized. What is the K
for lactic acid?
A buffer is to be prepared using acetic acid and sodium acetate to a target pH = 5.10.
What ratio of the
conjugate−base to conjugate−acid must be used to achieve this pH?
for acetic acid is 1.75 x 10
5. At equilibrium in a reaction, which of the following statements must be true?
the rate of the forward reaction has reached a maximum
no reaction is occurring
the rate constants of the forward and reverse reactions must be equal
there are more products than reactants
there is no net change in the amount of any reactant or product