Chemistry · 2020
JEE Main · 2 September 2020, Shift 2 · Q47
The heat of combustion of ethanol into carbon dioxids and water is -327 kcal at constant pressure. The heat evolved (in cal) at constant volume and…
The heat of combustion of ethanol into carbon dioxids and water is -$\displaystyle 327$ kcal at constant pressure. The heat evolved (in cal) at constant volume and $\displaystyle 27$°C (if all gases behave ideally) is ( $\displaystyle \mathrm{R}=2 \mathrm{cal} \mathrm{mol}^{-1}$ $\displaystyle \left.\mathrm{K}^{-1}\right)$ \_\_\_\_.
Official answer
−326400
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