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The pH of 10^(-5) M KOH solution will be...

The `pH` of `10^(-5)` M KOH solution will be

A

9

B

5

C

19

D

none of these

Text Solution

Verified by Experts

`KOHtoK^(+)OH^(-)`
`10^(-5)"M "10^(-5)"M "10^(-5)"M"`
`[OH^(-)]=10^(-5)M`
`pH=14-pOH`
`pH=14-(-log[OH^(-)])`
`=14+log[OH^(-)]=14+log10^(-5)`
`=14-5=9`
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