Question

pH of a solution, whose hydronium ion concentration is 6.2*10^-9 mol/l, is

Answer 1

Answer:

pH is 8.2

Explanation:

A solution is neutral if it contains equal concentrations of hydronium and hydroxide ions; acidic if it contains a greater concentration of hydronium ions than hydroxide ions; and basic if it contains a lesser concentration of hydronium ions than hydroxide ions

pX = −log X

[H3O+] means [H+] = 6.2×10−9mol/l  

pH = −log(6.2×10−9)

= −log(6.2) −log(10−9)    

= -0.81 + 9

= 8.2