Respuesta :

Answer: Option (a) is the correct answer.

Explanation:

pH is the negative logarithm of concentration of hydrogen ion.

That is,    pH = -log [tex][H^+][/tex]

Hence, pH of solution with [tex][H^+] = 1 \times 10^{-11}[/tex] is calculated as follows.

         pH = -log [tex][H^+][/tex]

               = -log [tex](1 \times 10^-{11})[/tex]

               = 11

Therefore, pH of solution with [tex][H^+] = 1 \times 10^{-11}[/tex] is 11.

11 by -log concentration of H+