H2 evolved at STP on complete reaction of 27 g of aluminium with excess of aqueous NaOH would be

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22.4 litres

44.8 litres

67.2 litres

33.6 litres

answer is D.

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Detailed Solution

H2O+Al27 g + NaOH → NaAlO2 + 32 H2volume of H2 evolved= 32 × 22.4 = 33.6 L

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