Calculate the amount of \[{{(N{{H}_{4}})}_{2}}S{{O}_{4}}\] in grams which must be added to 500 ml of \[0.200\,M\,N{{H}_{3}}\] to yield a solution with \[pH=9.35\] \[({{K}_{b}}\] for \[N{{H}_{3}}=1.78\times {{10}^{-5}})\] [UPSEAT 2001]

Calculate the amount of \[{{(N{{H}_{4}})}_{2}}S{{O}_{4}}\] in grams wh

1.	Calculate the amount of \[{{(N{{H}_{4}})}_{2}}S{{O}_{4}}\] in grams which must be added to 500 ml of \[0.200\,M\,N{{H}_{3}}\] to yield a solution with \[pH=9.35\] \[({{K}_{b}}\] for \[N{{H}_{3}}=1.78\times {{10}^{-5}})\] [UPSEAT 2001]
A.	10.56 gm
B.	15 gm
C.	12.74 gm
D.	16.25 gm
Answer» B. 15 gm

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Calculate the amount of \[{{(N{{H}_{4}})}_{2}}S{{O}_{4}}\] in grams which must be added to 500 ml of \[0.200\,M\,N{{H}_{3}}\] to yield a solution with \[pH=9.35\] \[({{K}_{b}}\] for \[N{{H}_{3}}=1.78\times {{10}^{-5}})\] [UPSEAT 2001]

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