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One litre of buffer solution contains 0....

One litre of buffer solution contains 0.1 mole of acetic acid add 1 mole of sodium acetate. Find its pH if `pK_(a)` of `CH_(3)COOH` is 4.8.

Text Solution

Verified by Experts

For an acid buffer `pH=pK_(a)"log"(["salt"])/(["acid"])`
`pH=4.8+"log" (1)/(0.1)=4.8 log 10`
`pH=4.8+1 rArr pH=5.8`
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VIKRAM PUBLICATION ( ANDHRA PUBLICATION)-CHEMICAL EQUILIBRIUM AND ACIDS BASES -PROBLEMS
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