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How many in Q.(4) are neutral ?...

How many in Q.(4) are neutral ?

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The correct Answer is:
C
Basic `[NH_(3) +NH_(4)CI ("basic buffer"), NH_(3), NaOH]` The basic buffer is less basic than `NH_(3)` alone because the `overset(o+)NH_(4)` supresses the ionisaiton of `NH_(3)` in the buffer.
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