Which of the following combinations will form | vedclass

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(C) basic buffer is formed by a mixture of a weak base and its salt with a strong acid.In option $C$,we have $NH_{4}OH$ (weak base) and $HCl$ (strong

Vedclass · Accepted Answer

$100 \ mL$ of $0.1 \ M \ HCl + 200 \ mL$ of $0.1 \ M \ NH_{4}OH$

Vedclass · Answer

(C) basic buffer is formed by a mixture of a weak base and its salt with a strong acid.In option $C$,we have $NH_{4}OH$ (weak base) and $HCl$ (strong acid).Initial milli-moles of $HCl = 100 	imes 0.1 = 10 \ mmol$.Initial milli-moles of $NH_{4}OH = 200 	imes 0.1 = 20 \ mmol$.The reaction is: $HCl + NH_{4}OH ightarrow NH_{4}Cl + H_{2}O$.After the reaction,$10 \ mmol$ of $NH_{4}OH$ remains,and $10 \ mmol$ of $NH_{4}Cl$ (salt) is formed.Since the mixture contains a weak base and its salt,it forms a basic buffer.

Which of the following combinations will form a basic buffer solution?

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Which of the following is a buffer solution?

All the given solutions have the same concentration. Mixing equal volumes of which of the following will produce a buffer solution?
$A = NH_4Cl$; $B = CH_3COONa$; $C = NH_4OH$; $D = CH_3COOH$

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