Ethanol was oxidized to acetic acid in a catalyst chamber at 18°C. What should be rate of removal of heat (in kcal/hr) to maintain the reaction chamber at 18°C with the feed rate of 2.3 kg ethanol per

Question

Ethanol was oxidized to acetic acid in a catalyst chamber at 18°C. What should be rate of removal of heat (in kcal/hr) to maintain the reaction chamber at 18°C with the feed rate of 2.3 kg ethanol per hour, along with excess oxygen to the system at 18°C, with a 40 mole per cent yield based on ethanol. The enthalpies of formation of H 2 O(l), C 2 H 5 OH(l) and CH 3 COOH(l) are, respectively, -68, -66 and -118 kcal/mol.

TestHub · Accepted Answer

C ₂ H ₅ OH(l) + O ₂ → CH ₃ COOH(l) + H ₂ O(l): Δ H = [(-118) + (-68)] - (-66) = -120 kcal/mol. The feed rate is calculated as 2300/46 = 50 mol/hr. At a 40% yield, 20 mol/hr reacts. The heat removal rate is 20 × 120 = 2400 kcal/hr. Answer: 2400.

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