Chemical Thermodynamics Part 2

Section: Chemistry

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Question : 90 of 100

Marks: +1, -0

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

Substance

H2

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]

+54.0‌kJ‌mol−1
−68.0‌kJ‌mol−1
−86.0‌kJ‌mol−1
+97.0‌kJ‌mol−1

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