Review Questions

1 . A   certain aqueous solution    at  25°C    has [OH−]   =   6.2 ×   10−5 M.

(A) Calculate   [H+].

(B) Calculate   the pH  of  the solution.

(C) Is  the solution    acidic  or  basic?

2 . What    is  the ratio   of  [H+]    of  a   solution    of  pH  =   4   to  the [H+]    of  a   solution    of  pH  =   7?

3 . Write   equations   expressing  what    happens to  each    of  the following   bases   in  aqueous

solutions.

(A) LiOH

(B) Ba(OH) 2

(C) NH 3

(D) NO 2 −

4 . What    volume  of  a   3   M   solution    of  NaOH    is  required    to  titrate 0.05    L   of  a   4   M   solution    of  HCl

to  the equivalence point?

    L

5 . If  10  mL  of  1   M   NaOH    is  titrated    with    1   M   HCl to  a   pH  of  2,  what    volume  of  HCl was added?

    mL