If 100 mole of H 2 O 2 decompose at 1 bar and 300 K , the work is done ( kJ ) by one mole of O 2 ( g ) as it expands against 1 bar pressure is: 2 H 2 O 2 l ⇌ 2 H 2 O l + O 2 ( g ) R = 8 .3 J K - 1 mol - 1

Question

If 100 mole of H 2 O 2 decompose at 1 bar and 300 K , the work is done ( kJ ) by one mole of O 2 ( g ) as it expands against 1 bar pressure is: 2 H 2 O 2 l ⇌ 2 H 2 O l + O 2 ( g ) R = 8 .3 J K - 1 mol - 1, 124 . 50, 249 . 00, 498 . 00, 62 . 25

MARKS App · Accepted Answer

Irreversible process W = P ∆ V = nRT 2 H 2 O 2 100 mol l ⇌ 2 H 2 O l + O 2 50 mol g ∴ 100 mol H 2 O 2 on decomposition will give 50 mol O 2 = 50 × 8.3 × 300 = 124500 J =124.50 kJ

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