The pH of 10⁻¹⁰ M NaOH solution is nearest to

Step-by-step solution

Given, concentration of NaOH =10⁻¹⁰ M 10⁻¹⁰ NaOH 10⁻¹⁰ Na ⁺ + 10⁻¹⁰ OH ⁻ [ OH ]⁻ from NaOH =10⁻¹⁰ Total [ OH ⁻ ]=10⁻⁷+10⁻¹⁰=10⁻⁷(1+0.001)=10⁻⁷ ( 1001 1000 )=10⁻¹⁰ 1001 pOH =- [ OH ⁻ ]=- (1001 10⁻¹⁰ )=-3.004+10=6.9996 pH + pOH =14 pH =14-6.9996=7.0004 7