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JEE Advance 2019
Paper 1
Multiple correct answers - Select all that apply
Question
Choose the reaction(s) from the following options, for which the standard enthalpy of reaction is equal to the standard enthalpy of formation.
Select ALL correct options:
A
$\frac{3}{2} \mathrm{O}_2(\mathrm{~g}) \rightarrow \mathrm{O}_3(\mathrm{~g})$
B
$\frac{1}{8} \mathrm{~S}_8(\mathrm{~s})+\mathrm{O}_2(\mathrm{~g}) \rightarrow \mathrm{SO}_2(\mathrm{~g})$
C
$2 \mathrm{H}_2(\mathrm{~g})+\mathrm{O}_2(\mathrm{~g}) \rightarrow 2 \mathrm{H}_2 \mathrm{O}(\mathrm{l})$
D
$2 \mathrm{C}(\mathrm{g})+3 \mathrm{H}_2(\mathrm{~g}) \rightarrow \mathrm{C}_2 \mathrm{H}_6(\mathrm{~g})$
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
⚠ Partially correct. Some answers are missing.
Solution
Enthalpy of formation is defined as enthalpy change for formation of 1 mole of substance from its elements, present in their natural most stable form.
Question Tags
JEE Advance
Chemistry
Easy
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