Question

In the solution of pH 10,the amount of NaOH present in 500cc is

Answer 1

concentration of hydrogen=10⁻¹°
concentration of hydroxyl ion =10⁻⁴
10⁻⁴=no.of moles/0.5L
no.of moles=10⁻⁴*0.5
                =1/20000
mass=(1/20000)*40=1/500=0.002g