Equilibrium Question 224

Question: At $ 90^{o}C $ pure water has $ [H_3{O^{+}}]={10^{-6}},M, $ the value of $ K_{w} $ at this temperature will be [IIT 1981; MNR 1990; CBSE PMT 1993; UPSEAT 1999]

Options:

A) $ {10^{-6}} $

B) $ {10^{-12}} $

C) $ {10^{-14}} $

D) $ {10^{-8}} $

Show Answer

Answer:

Correct Answer: B

Solution:

For pure water $ [{H^{+}}]=[O{H^{-}}] $ ,
$ \therefore ,K_{w}={10^{-12}} $ s



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