The \( \mathrm{pH} \) of a buffer solution containing \( 0.1 \mathrm{~mol} / \mathrm{L} \) of ac...
The \( \mathrm{pH} \) of a buffer solution containing \( 0.1 \mathrm{~mol} / \mathrm{L} \) of acetic acid and \( 0.15 \mathrm{~mol} / \mathrm{L} \) of sodium acetate is \( \left(\mathrm{K}_{\mathrm{a}_{\mathrm{a}}}\right. \) for acetic acid \( =1.75 \times 10^{-5} \) )
(a) \( 4.9 \)
(b) \( 3.0 \)
-(c) \( 4.2 \)
-(d) \( 5.4 \)
\( \mathrm{P} \)
W
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