1.

The pH of a solution resulting from the addition of 12.5mL of 0.1M HCl to 50mL of a solution containing 0.15M CH_(3)COOH & 0.2M CH_(3)COONa will be (Given : pK_(a) of CH_(3)COOH=4.74)

Answer»

`4.74`
`lt4.74`
`gt4.74`
`gt 9.26`

Solution :`{:(,CH_(3)COONa,+,HCL,rarr,CH_(3)COOH,+,NaCl),(t=0,10,,1.25,,7.5,,-),(t=eq,8.75,,0,,8.75,,-):}`
`pH=pK_(a)=4.74`


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