JEE Main 2014 — Thermodynamics (C) Question with Solution
JEE Main 2014 (12 Apr Online)
Question
The standard enthalpy of formation for methane, is . In order to calculate the average energy given out in the formation of a bond from this it is necessary to know which one of the following?
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Show full solutionCorrect option: A
Correct answer
AThe dissociation energy of the hydrogen molecule, .
Step-by-step explanation
To calculate average enthalpy of bond in methane following informations are needed
(i) dissociation energy of i.e.
(ii) Sublimation energy of (graphite) to graphite (Suppose) Given
graphite
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This is a previous-year question from JEE Main 2014, covering the Thermodynamics (C) chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.