Question

How to calculate for 0.01m sulphuric acid?

Answer 1

Hi,

pH of any acid can be calculated by using the following formula:

pH= -log(H+) Here H+ refers to the concentration of H+ ions or the Hydronium ions.

Firstly we need to see the disociation of H2SO4 in water:

H2SO4(aq)————→ 2H+(aq) + (SO4)^2-(aq)

Here it can be clearly observed that 1 moles of sulphuric acid gives rise to 2 moles of H+ ions.

Therefore, 0.01 moles of H2SO4 will give rise to 0.02 moles of H+ ions

Substituting the value of H+ in the formula,

pH=-log(0.02)

which is equal to 1.698.

Therefore pH of 0.01 moles of H2SO4 is 1.698 or 1.70.

Hope it helps!