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Thermodynamics question

2023 · 13 Apr · Shift 1 · Q21

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JEE Main
Chemistry
Thermodynamics
2023 · 13 Apr · Shift 1 · Q21

Thermodynamics question

2023 · 13 Apr · Shift 1 · Q21

JEE MainChemistryThermodynamicsNumerical+4 / −1

\mathrm{A}_{2}+\mathrm{B}_{2} \rightarrow 2 \mathrm{AB} . \Delta H_{f}^{0}=-200 \mathrm{~kJ} \mathrm{~mol}^{-1}

\mathrm{AB}, \mathrm{A}_{2}

and

\mathrm{B}_{2}

are diatomic molecules. If the bond enthalpies of

\mathrm{A}_{2}, \mathrm{~B}_{2}

and

\mathrm{AB}

are in the ratio

1: 0.5: 1

, then the bond enthalpy of

\mathrm{A}_{2}

is

\underline{\hspace{2cm}}

\mathrm{kJ} ~\mathrm{mol}^{-1}

(Nearest integer)

Numerical answer

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