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Question

Chemistry Question on Acids and Bases

The pH value of 0.01 N NaOH solution is

A

2

B

6

C

12

D

11

Answer

12

Explanation

Solution

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