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

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

A

0.1moldm−3NH4OH0.1 \mathrm { moldm } ^ { - 3 } \mathrm { NH } _ { 4 } \mathrm { OH } and dm−3\mathrm { dm } ^ { - 3 } HCl

B

0.05moldm−3NH4OH0.05 \mathrm { moldm } ^ { - 3 } \mathrm { NH } _ { 4 } \mathrm { OH } and 0.1moldm−30.1 \mathrm { moldm } ^ { - 3 } HCl

C

0.1moldm−3NH4OH0.1 \mathrm { moldm } ^ { - 3 } \mathrm { NH } _ { 4 } \mathrm { OH } and 0.05moldm−30.05 \mathrm { moldm } ^ { - 3 } HCl

D

0.1 moldm−3CH3COONa0.1 \mathrm {~mol} \mathrm { dm } ^ { - 3 } \mathrm { CH } _ { 3 } \mathrm { COONa } and 0.1 moldm−30.1 \mathrm {~mol} \mathrm { dm } ^ { - 3 } NaOH

Answer

0.1moldm−3NH4OH0.1 \mathrm { moldm } ^ { - 3 } \mathrm { NH } _ { 4 } \mathrm { OH } and 0.05moldm−30.05 \mathrm { moldm } ^ { - 3 } HCl

Explanation

Solution

: In 0.1 moldm−3NH4OH0.1 \mathrm {~mol} \mathrm { dm } ^ { - 3 } \mathrm { NH } _ { 4 } \mathrm { OH } and NH4Cl\mathrm { NH } _ { 4 } \mathrm { Cl } and NH4OH\mathrm { NH } _ { 4 } \mathrm { OH } which will produce a buffer solution.