Which of the following ions or compounds in a solutions tends to produe an acidic, a basic, or a neutral solution.
a. i. `C_(2)H_(3)O_(2)^(Θ)` ii. `Na^(o+)` iii. `So_(3)^(2-)` iv. `F^(Θ)` v. `NH_(4)^(o+)`
b. i. `CH_(3)COONa` ii. `ZnCI_(2)` iii. `KNO_(3)` iv. `NH_(4)CI`
c. i. `NaCN` ii. `K_(2)CO_(3)` iii. `H_(3)PO_(4)` iv. `NaF`
d. i. `NH_(4)NO_(3)` ii. `Ba_(2)CO_(3)` iii. `NaHSO_(4)` iv. `NaOCI` v. `HOCI` vi. `AI(NO_(3))_(3)`

Explanation

a. (i), (iii), and (iv) are basic (since each is conjegate base of a weak acid)
(ii) Neutral (it is the conjugate acid of a strong base)
(v) Acidic (it is the conjugate base of a weak base)
b. (i) Basic (salt of `W_(A)//S_(B))`
(ii) and (iv) are Acidic (salt of `W_(B)//W_(A))`
(iii) neutral (salt of `S_(A)//W_(B))`
c. (i),(ii), and (iv) are basic (salt of `S_(B)//W_(A))`
(iii) is acidic (it is a weak acid)
d. (i),(iii), `(v)` and (vi) are acidic (expect (v), all are salt of `W_(B)//S_(A))` But (v) is a weak acid.
(ii) and (iv) are basic (salt of `S_(B)//W_(A))`