Classify each aqueous solution as acidic, base, or neutral at 25 ° C.

Question

Classify each aqueous solution as acidic, base, or neutral at 25 ° C.

1. [OH^-]=7.6x10^-6
2. pH=12.06
3. pH=7.00
4. [H⁺]=1.0x10^-7

Answer 1

1 pOH = -log([OH^-] = -log(7.6x10^-6)

pOH = 5.119

pOH + pH = 14.00

therefore, pH = 14.00-5.119 = 8.88

So, this solution is basic

2 pH 12.06 is basic

3 pH 7.00 is neutral

4 pH = -log([H⁺]) = -log(1.0x10^-7)

= 7.00

this solution is neutral