Login / Register

List of top Chemistry Questions on Thermodynamics asked in MHT CET

The enthalpy change for the reaction \( \text{C}_2\text{H}_4 (\text{g}) + 3\text{O}_2 (\text{g}) \rightarrow 2\text{CO}_2 (\text{g}) + 2\text{H}_2\text{O} (\text{l}) \) is \( -1410 \, \text{kJ/mol} \). If the standard enthalpies of formation of \( \text{CO}_2 (\text{g}) \) and \( \text{H}_2\text{O} (\text{l}) \) are \( -393.5 \, \text{kJ/mol} \) and \( -286 \, \text{kJ/mol} \) respectively, what is the standard enthalpy of formation of \( \text{C}_2\text{H}_4 (\text{g}) \)?
The enthalpy of formation of hydrogen chloride (HCl) is \( -92.3 \, \text{kJ/mol} \). If 2 moles of HCl are formed from hydrogen and chlorine gas, calculate the total heat released.
What is the enthalpy change (\( \Delta H \)) for an exothermic reaction?
If the activation energy for the forward reaction is \( 150 \, \text{kJ/mol} \) and that of the reverse reaction is \( 260 \, \text{kJ/mol} \), what is the enthalpy change for the reaction?