Thermochemistry MCQ - Practice Questions with Answers

Consider an endothermic reaction with the activation energies for the backward and forward reactions, respectively. In general

From the following bond energies:

H-H bond energy : 431.37 k J 

C=C bond energy : 606.10 k J 

C-C bond energy : 336.49 k J 

C-H bond energy : 410.50 k J 

Enthalpy for the reaction,

Which of the following options is the correct relation between change in enthalpy and change in internal energy?

Consider the reaction $A+B⟶C$
the energy profile diagram for the reaction is given below:-

Question : what is the enthalpy of reaction $\left({\mathrm{\Delta }}_{\mathrm{r}}\mathrm{H}\right)$.