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Which buffer solution comprising of the ...

Which buffer solution comprising of the following has its pH value greater than 7 -

A

`CH_3COOH+CH_3COONa`

B

`HCOOH+HCOOK`

C

`CH_3COONH_4`

D

`NH_4OH+NH_4Cl`

Text Solution

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The correct Answer is:
D
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