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The pH of `0.001 M HCN` is

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The pH of `0.001 M HCN` is
A. `3`
B. `11`
C. Between `3` & `7`
D. `7`
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1 Answer

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Best answer
Correct Answer - C
`[H^(+)] = 10^(-3)`
`P^(H) = -log_(10)[H^(+)]`
`HCN` is weak acid. So `P^(H)` value between `3` & `7`
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