Question

Find pH of a solution has H3O ions concentration 10^-3moles/L​

Answer 1

Explanation:

$ph = - log_{10}( {10}^{ - 3} ) \\ = 3 log_{10}(10) \\ = 3 \times 1 \\ = 3$

Answer 2

Answer:

3

Explanation:

Moles/L is molar concentration

Hence concentration of H3O+ is 10^-3 molar

as we know

pH=-log[H3O+]

pH=-log[10^-3]

pH=-(-3)log[10]

therefore pH=3