The \( \mathrm{pH} \) of a \( 0.02 \mathrm{M} \mathrm{NH}_{4} \mathrm{Cl} \) solution will be [g...

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The \( \mathrm{pH} \) of a \( 0.02 \mathrm{M} \mathrm{NH}_{4} \mathrm{Cl} \) solution will be [given \( \mathrm{K_b}\left(\mathrm{NH}_{4} \mathrm{OH}\right)=10^{-5} \) and \( \left.\log 2=0.301\right] \)
(1) \( 4.65 \)
(2) \( 5.35 \)
(3) \( 4.35 \)
(4) \( 2.65 \)
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