Question

Question: Calculate the pH of a 2.0 M solution of H₂SO₄.${\mathbf{\text{pH = - log[H}}}^{\mathbf{\text{+}}}\mathbf{\text{]=-log(4)=-0.602}}$

Short answer

Answer

pH of the given H₂SO₄ solution is -0.602.

Step-by-step solution

Calculation of [H+] Concetration

H₂SO₄ is a very strong acid so it dissociates completely.

${\text{H}}_{\text{2}}{\text{SO}}_{\text{4}}\rightleftharpoons 2{\text{H}}^{\text{+}}\text{+ S}{{\text{O}}_{\text{4}}}^{\text{2 -}}$

That means one H₂SO₄ molecule will give 2 H⁺ ions.

${\text{[H}}^{\text{+}}]=2\times 2=4\text{M}$

pH Calculation

pH can be calculated as:

pH of the given H₂SO₄ solution is -0.602.