12g of CH(3)COOH and 4g of NaOH are mixe...

`12g` of `CH_(3)COOH` and `4g` of `NaOH` are mixed and diluted to `1` litre solution. If `P^(Ka)` of `CH_(3)COOH` is `4.8` the `P^(H)` of the solution is

A

`4.8`

B

`5`

C

`5.6990`

D

`5.3010`

Text Solution

Verified by Experts

The correct Answer is:

A

`CH_(3)COOH + NaOH rarr CH_(3)COONa + H_(2)O`
`[CH_(3)COOH] = (0.2 - 0.1) - 0.1 = 0.1`
`[CH_(3)COONa] = 0.1`
`P^(H) = 4.8 + "log" (0.1)/(0.1)`
`P^(H) = 4.8 + "log" (0.1)/(0.1)`
`P^(H) = 4.8`

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