Which of the following solutions will have pH close to 1.0 ?

Options

A. `100 mL M//10 HCl + 100 mL M//10 NaOH`
B. `160 mL 0.075 M H_(2)SO_(4) + 40 mL M//10 NaOH`
C. `55 mL M//10 HCl + 45 mL M//10 NaOH`
D. `75 mL M//5 HCl + 25 mL M//5 NaOH`

Answer

B, D

Explanation

`pH = 1 rArr [H^(+)] = 10^(-1)`
`:. [H^(+)] = 0.1 = (N_(a)V_(a) - N_(b)V_(b))/((V_(a) + V_(b))`