Question

The heat of combustion of ethanol into
carbon dioxide and water is - 327 kcal at
constant pressure. The heat evolved
(in cal) at constant volume and 27 C (if all
gases behave ideally) is (R=2 cal mol-1
K-1)​

Answer 1

Answer:

C2H5OH(l) + 3O2(g) → 2CO2(g) + 3H2O(l) Δng = 2 – 3 = –1 ΔcH = ΔcU + (Δng) RT ΔcH = ΔcU – RT ΔcU = ΔcH + RT = –327 × 103 + 2 × 300 = –326400 cal. Heat evolved = 326400 cal.Read more on Sarthaks.com - https://www.sarthaks.com/901565/theheat-of-combustion-ethanol-into-carbon-dioxides-and-water-327-kcal-constant-pressure

Explanation:

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Answer 2

Answer:

The heat of combustion of ethanol into carbon dioxide and water is –327 kcal at constant pressure. The heat evolved (in cal) at constant volume and

(if all gases behave ideally) is (R = 2 cal

Explanation:

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