Thermochemistry | JEE Main 2025 Solution | Hess Law Question

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JEE MAIN 2025

29-01-2025 SHIFT-2

Question

If $C$ (diamond) $\rightarrow C$ (graphite ) $+X \mathrm{~kJ} \mathrm{~mol}^{-1}$
$\mathrm{C}($ diamond $)+\mathrm{O}_{2}(\mathrm{~g}) \rightarrow \mathrm{CO}_{2}(\mathrm{~g})+\mathrm{YkJmol}^{-1}$
C (graphite) $+\mathrm{O}_{2}(\mathrm{~g}) \rightarrow \mathrm{CO}_{2}(\mathrm{~g})+\mathrm{ZkJmol}^{-1}$
at constant temperature. Then

Select the correct option:

A

$X=Y+Z$

B

$X=Y-Z$

C

$X=-Y+Z$

D

$-X=Y+Z$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

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Chemistry

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