Which of the following is an endothermic reaction?
- A$N_{2(g)} + 3 H_{2(g)} \longrightarrow 2 NH_{3(g)} + 92 \ kJ$
- B$N_{2(g)} + O_{2(g)} + 180.8 \ kJ \longrightarrow 2 NO_{(g)}$
- C$H_{2(g)} + Cl_{2(g)} \longrightarrow 2 HCl_{(g)} + 184.6 \ kJ$
- D$C_{(graphite)} + 2 H_{2(g)} \longrightarrow CH_{4(g)} + 74.8 \ kJ$
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Similar Questions
$C_{(diamond)} + O_2 \to CO_2; \Delta H = -395.3 \ kJ/mole$
$C_{(graphite)} + O_2 \to CO_2; \Delta H = -393.4 \ kJ/mole$
$C_{(graphite)} \to C_{(diamond)}; \Delta H = ?$
$C_{(graphite)} + O_2 \to CO_2; \Delta H = -393.4 \ kJ/mole$
$C_{(graphite)} \to C_{(diamond)}; \Delta H = ?$
Medium
View SolutionThe heats of combustion of carbon and carbon monoxide are $-394 \, kJ \, mol^{-1}$ and $-285 \, kJ \, mol^{-1}$ respectively. Find the heat of formation of $CO$ in $kJ \, mol^{-1}$.
Medium
View SolutionGiven
$N_{2(g)} + 3H_{2(g)} \longrightarrow 2NH_{3(g)} \quad \Delta_{r}H^{\theta} = -92.4 \, kJ \, mol^{-1}$
What is the standard enthalpy of formation of $NH_{3}$ gas?
$N_{2(g)} + 3H_{2(g)} \longrightarrow 2NH_{3(g)} \quad \Delta_{r}H^{\theta} = -92.4 \, kJ \, mol^{-1}$
What is the standard enthalpy of formation of $NH_{3}$ gas?
Easy
View SolutionThe enthalpy of formation of ethane $(C_2H_6)$ from ethylene $(C_2H_4)$ by the addition of hydrogen,where the bond energies of $C-H$,$C-C$,$C=C$,and $H-H$ are $414 \ kJ/mol$,$347 \ kJ/mol$,$615 \ kJ/mol$,and $435 \ kJ/mol$ respectively,is $........$ $kJ/mol$.
The enthalpy change for the reaction $C(s) + O_2(g) \to CO_2(g)$ is:
Easy
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