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Question

Which of the following will produce a buffer solution when mixed in equal volumes?


A
0.1mol dm3 NH4OH and 0.1mol dm3 HCl.
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B
0.05mol dm3 NH4OH and 0.1mol dm3 HCl.
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C
0.1mol dm3 NH4OH and 0.05mol dm3 HCl.
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D
0.1mol dm3 CH4COONa and 0.1mol dm3 NaOH.
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Solution

The correct option is C $$0.1 mol\  dm^{-3}$$ $$NH_{4}OH$$ and $$0.05 mol\  dm^{-3}$$ $$HCl$$.
$$0.1 mol\  dm^{-3}$$ $$NH_{4}OH$$ and $$0.05 mol\  dm^{-3}$$ $$HCl$$.
As a mixture of ammonium chloride and ammonium hydroxide acts as a buffer around pH $$9.25$$.

Chemistry

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