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Thermodynamics question

2019 · Shift 1 · Q5

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PYQ Library
JEE Advanced
Chemistry
Thermodynamics
2019 · Shift 1 · Q5

Thermodynamics question

2019 · Shift 1 · Q5

JEE AdvancedChemistryThermodynamicsMultiple correct+4 / −1

Choose the reaction(s) from the following options, for which the standard enthalpy of reaction of equal to the standard enthalpy of formation.

A
2 $C$ (g) + 3 $H_2$ (g) $\to$ $C_2H_6$ (g)
B
2 $H_2$ (g) + $O_2$ (g) $\to$ 2 $H_2O$ (l)
C
${3 \over 2}$ $O_2$ (g) $\to$ $O_3$ (g)
D
${1 \over 8}$ $S_8$ (s) + $O_2$ (g) $\to$ $SO_2$ (g)

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