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For complete combustion of ethanol, C_2 H_5 OH ( ) + 3 O_2 ( g ) → 2 CO_2 ( g ) + 3 H_2 O ( ), the amount of heat produced as measured in bomb…

JEE Main 2014 — Chemistry Physical Chemistry

2014mcqmedium

For complete combustion of ethanol,

C2H5OH(l)+3O2(g)→2CO2(g)+3H2O(l){\text{C}}_{2} {\text{H}}_{5} \text{OH} ( \text{l} ) + 3 {\text{O}}_{2} ( \text{g} ) \rightarrow 2 {\text{CO}}_{2} ( \text{g} ) + 3 {\text{H}}_{2} \text{O} ( \text{l} )C2​H5​OH(l)+3O2​(g)→2CO2​(g)+3H2​O(l),

the amount of heat produced as measured in bomb calorimeter, is 1364.47 kJ mol−1{\text{1364.47 kJ mol}}^{-1}1364.47 kJ mol−1 at 25℃2 5 ℃25℃. Assuming ideality the Enthalpy of combustion, ΔcH{\Delta }_{\text{c}} \text{H}Δc​H, for the reaction will be: (R=8.314 kJ mol−1)( \text{R} = {\text{8.314 kJ mol}}^{-1} )(R=8.314 kJ mol−1)

Official previous-year question

Held on 6 Apr 2014 · Verified 6 Jul 2026.

Options

  1. A

    −1366.95 kJ mol−1- {\text{1366.95 kJ mol}}^{-1}−1366.95 kJ mol−1

  2. B

    −1361.95 kJ mol−1- {\text{1361.95 kJ mol}}^{-1}−1361.95 kJ mol−1

  3. C

    −1460.50 kJ mol−1- {\text{1460.50 kJ mol}}^{-1}−1460.50 kJ mol−1

  4. D

    −1350.50 kJ mol−1- {\text{1350.50 kJ mol}}^{-1}−1350.50 kJ mol−1

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