At 25^{\circ} {\C} and 1 {\atm} pressure, the enthalpies of combustion are as given below: Substance H_2 C (graphite) C_2H_6(g) \frac{∆_cH^⊝}{k.Jm^-1} -286.0 -394.0 -1560.0 The enthalpy of formation of ethane is [24-Jun-2022-Shift-2]

Correct Answer is : −86.0kJmol−1

JEE Main 24 June 2022 Shift 2 Solved Paper

Section: Chemistry

Question : 64 of 90

Marks: +1, -0

At 25∘C and 1‌atm pressure, the enthalpies of combustion are as given below:

Substance

C (graphite)

C2H6(g)

∆cH⊝

k.Jm−1

-286.0

-394.0

-1560.0

The enthalpy of formation of ethane is

[24-Jun-2022-Shift-2]

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