What volume of 3 molar HNO3 is needed to oxidize 8 g of Fe2+ to Fe3+ ?HNO3 → NO

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8 ml

15.87 ml

32 ml

64 ml

answer is B.

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Detailed Solution

The balanced reaction is3Fe2+ + 4H+ + NO3- → 3Fe3+ + NO + 2H2O 3 1 1/7 3V ∴ 31/7 = 13V ⇒ V = 163 L = 100063 mL = 15.87 ml

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