0.70 g of mixture `(NH_4 )_2 SO_4` was boiled with 100 ml of 0.2 N NaOH solution till all the `NH_3(g)` evolve:l ancl ge

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Q 2615701669.     0.70 g of mixture `(NH_4 )_2 SO_4` was boiled with 100 ml of 0.2 N NaOH solution till all the `NH_3(g)` evolve:l ancl get dissolved in solution itself. The remaining solution was diluted to 250 ml. 25 ml of this solution was neutralized using 10 ml of a 0.1 N `H_2SO_4` solution. The percentage purity of the `(NH_4)_2 SO_4` sample is
A

94.3

B

50.8

C

47.4

D

79.8

HINT


Solution
(Provided By a Student and Checked/Corrected by EXXAMM.com Team)

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