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  4. The pH value of 0.01 N NaOH solution is

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Q. The pH value of 0.01 N NaOH solution is

JIPMERJIPMER 2014Equilibrium

Solution:

Given, NaOH = 0.01 N
$ \, \, \, \, \, \, \, \, \, [OH^-]=0.01 N=1 \times 10^{-2}$
$ \, \, \, \, \, \, \, \, \, pOH=-log[OH^-]$
$ \, \, \, \, \, \, \, \, \, =-log(1 \times 10^{-2})$
$\, \, \, \, \, \, \, \, \, =2$
$ \, \, \, \, \, \, \, $pH+ pOH=14
$ \, \, \, \, \, \, \, $pH+ 2=14
$\therefore \, \, \, \, \, \, \, \, \, \, \, pH=12$