Calculate the amount of\[{{(N{{H}_{4}})}_{2}}S{{O}_{4}}\]in grams which must be added to 500 ml of 0.2 M \[N{{H}_{3}}\], to yield a solution of pH=9, \[{{K}_{b}}\]for \[N{{H}_{3}}=2\times {{10}^{-5}}\]

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

1.	Calculate the amount of\[{{(N{{H}_{4}})}_{2}}S{{O}_{4}}\]in grams which must be added to 500 ml of 0.2 M \[N{{H}_{3}}\], to yield a solution of pH=9, \[{{K}_{b}}\]for \[N{{H}_{3}}=2\times {{10}^{-5}}\]
A.	3.248 g
B.	4.248 g
C.	1.320 g
D.	6.248 g
Answer» D. 6.248 g

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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 0.2 M \[N{{H}_{3}}\], to yield a solution of pH=9, \[{{K}_{b}}\]for \[N{{H}_{3}}=2\times {{10}^{-5}}\]

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