1.

Calculate the amount of (NH_(4))SO_(4) in grams which must be added to 500 ml of 0.200 M NH_(3) to yield a solution with pH = 9.35 (K_(b) for NH_(3) = 1.78 xx 10^(-5))

Answer»

10.56 gm
15 gm
12.74 gm
16.25 gm

Answer :A


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