A sample of hydrazine sulphate `(N_2H_6SO_4`) was dissolved in `100` mL of water, `10` mL of this solution was reacted w

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Q 1189267117.     A sample of hydrazine sulphate `(N_2H_6SO_4`) was dissolved in `100` mL of water, `10` mL of this solution was reacted with excess of ferric chloride solution and warmed to complete the reaction. Ferrous ion formed was estimated and it required `20` mL of `M/50` potassium permanganate solution. Calculate the amount of hydrazine sulphate in one litre of the solution.
Reaction:
`4Fe^(3+) + N_2H_4 → N_2 + 4Fe^(2+) + 4H^+`
`MnO_4^−+5Fe^(2+) +8H^+ → Mn^(2+) + 5Fe^(3+) + 4H_2O`
JEE 1988
A

`7.6 g`

B

`4.2 g`

C

`6.5 g`

D

`5.4 g`

HINT


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

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