Question

A solution having pH = 13, calculate the no. of H⁺ ions present in 1 mL of this solution :

Answer 1

pH = 13 so [H⁺] = 10^–13 M

moles of H⁺ in one mL

∴ No. of H⁺ ions = 10^–16 × 6.022 × 10²³ 

= 6.022 × 10⁷