Question

The number of moles of H+ in 100 ml of a solution of pH = 10 is

Answer 1

pH= -log(H⁺)

10 = -log(H⁺)

H⁺ = 10⁻¹⁰ Mol/Litre

Therefore, moles of H⁺ in 100 ml solution = (10⁻¹⁰/1000 ml)×100

                                                                     =10⁻¹¹ moles