The $\mathrm{pH}$ of a solution is 11. It is diluted by 1000 times. Then the $\mathrm{pH}$ of resulting solution is

The $\mathrm{pH}$ of a solution is 11 . It is diluted by 1000 times. Then the $\mathrm{pH}$ of resulting solution is

$\mathrm{pH}$ = 11

$\mathrm{pOH}$ = 14- 11 =3

$\left[{\mathrm{OH}}^{-}\right]$ =10^-3

N₁V₁=N₂V₂

10^-3 x V₁ =1000 V₁ x N₂

N₂ = 10^-6

$\left[{\mathrm{OH}}^{-}\right]$ =10^-6

 $\mathrm{pOH}$ = 6

$\mathrm{pH}$ = 14- 6

$\mathrm{pH}$ = 8

Hence the correct answer (A) 8