pH of solution produced when aqueous solution of pH of `6` is mixed with an equal

Options

A. `4.3`
B. `3.3`
C. `4.0`
D. `4.5`

Answer

B

Explanation

`(10^(-6) xx 10^(-3))/(2) = (10^(-3))/(2)[10^(-3) + 1]`
`[H^(+)] = 0.5 xx 10^(-3) = 5 xx 10^(-4)`
`pH = -log 5 xx 10^(-4) = 4-0.6990 = 3.3010`