Find the pH of .0345 M HCl concentration

1.46

Explanation:

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

Thus, pH is expressed as pH = - log(H+)

HCl ---> H+ + Cl-

The acid ionizes to give hydrogen ion H+ as the only positive ion. Hence, the concentration of H+ is also 0.0345

So, pH = - log(0 .0345)

pH = -(-1.46)

pH = 1.46 (since the two minus signs will cancel out)

Thus, the pH of .0345 M HCl concentration is 1.46 (strongly acidic)