\( \mathrm{HCN} \) is a weak acid \( \left(\mathrm{K}_{\mathrm{a}}=...

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\( \mathrm{HCN} \) is a weak acid \( \left(\mathrm{K}_{\mathrm{a}}=6.2 \times 10^{-10}\right) . \mathrm{NH}_{4} \mathrm{OH} \) is a
P weak base \( \left(\mathrm{K}_{\mathrm{b}}=1.8 \times 10^{-5}\right) \). A \( 1 \mathrm{M} \) solution of

W \( \mathrm{NH}_{4} \mathrm{CN} \) would be:
(1) Strongly acidic
(2) Weakly acidic
(3) Neutral
(4) Weakly basic
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