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What will be the value of pH of 0.01 "mo...

What will be the value of pH of 0.01 `"mol dm"^(-3)CH_(3)COOH(K_(1)=1.74xx10^(-5))` ?

A

`3.4`

B

`3.6`

C

`3.9`

D

`3.0`

Text Solution

Verified by Experts

The correct Answer is:
A
`[H_3O^+]=sqrt(K_a.C)`
`=sqrt(1.74xx10^(-5)xx0.01)=4.17xx10^(-4)`
`pH=-log (4.17xx10^(-4))` =3.4
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