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4g of NaOH was dissolved in one litre of...

`4g` of `NaOH` was dissolved in one litre of a solution containing one mole of acetic acid and one mole of sodium acetete. Find the pH of the resulting solution (`K_(a)` of acetic acid is `1.8xx10^(-3)`)

A

`4.70`

B

`4.83`

C

`5.92`

D

`6.87`

Text Solution

Verified by Experts

The correct Answer is:
B
`pH=pKa+log["Salt"]/[["Acid"]]=4.74+log[1.1]/[[0.9]]`
Reaction :
`CH_(3)COOH+NaOHrarrCH_(3)COOHNa`
`{:(1," ",0.1," ",1),(1-0.1," ",0," ",1.1):}`
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