Answer to Question #98755 in Physical Chemistry for Abhishek

Question

Calculate the hydroxide Ion concentration of an aqueous solution having pH 4 .

Answer 1

GIVEN

p^H = 4

WE KNOW

p^H + p^OH = 14

p^OH = 14 - 4

p^OH = 10

WE ALSO KNOW THAT

p^OH = -log [OH ^- ]

SO ,

-log₁₀ [OH - ] = 10

[OH ^- ] = 10^-10

HENCE ,

HYDROXIDE ION CONCENTRATION OF AN AQUEOUS SOLUTION HAVING P^H 4 IS [OH ^- ] = 10 ^-10