Question

A solution of HCl has mc012-1.jpg = 0.01 M. What is the pH of this solution?

Answer 1

Answer: The pH of the 0.02 M HCl solution is 2.

Explanation:

The pH of the solution is defined as negative logarithm of hydrogen ion concentration in a solution.

$pH=-\log[H^+]$

The pH of the HCl solution of 0.01 Molar willbe :

$HCl(aq)\rightarrow H^+(aq)+Cl^-(aq)$

0.01 Molar of HCl will produce 0.01 M of $[H^+]$ ions.

$[H^+]=0.01 M$

$pH=-\log[H^+]=-\log[0.01]=2$

The pH of the 0.02 M HCl solution is 2.

Answer 2

PH = -log10 [H+]. So anwer 2 pH