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40 mg of pure sodium hydroxide is dissol...

40 mg of pure sodium hydroxide is dissolved in 10 L of distilled water. The pH of the solution is

A

`9.0`

B

10

C

11

D

12

Text Solution

Verified by Experts

The correct Answer is:
B
`[NaOH]=(40 xx 10^(-3))/(40 xx 10)=10^(-4)M`
`[OH^(-)] =10^(-4)M` ltbr. `H^(+)=10^(-10)M`
`pH =10`
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