Question

What is the ph of a solution whose hydrogen ion concentration is 1 x 10-10 m

Answer 1

H

${p}^{H} = - log( {H}^{ + } ) \\ {p}^{H} = - log( {10}^{ - 10} \\ {p}^{H} = - ( - 10) log(10) \\ {p}^{H} = 10$

hope it helps

Answer 2

Actually the hydrogen ion concentration is much low.....

Hence we cannot neglect the H+ concentration of water.....

pH would not be 10...

(10^-10+x){x}=10^-14

x is concentration of H+ and OH- From water......

Solve for x.....find H+ concentration.

And then apply...

pH=-log[H+]...

ANSWER= 6.99....aprox.

Hope you got it...