Question

What are thermochemical equations?

Answer 1

1. Thermochemical equations: The chemical equation which includes the term 'Heat' are referred to as thermochemical equations.
2. They include chemical equations for endothermic reactions and exothermic reactions.
3. Example of the thermochemical equation - When Carbon ($\mathrm{C}$) is burnt in oxygen (${\mathrm{O}}_2$), it produces carbon dioxide (${\mathrm{CO}}_2$ ) and also releases 393 kJ/mol of heat.

$$\begin{gathered} \mathrm{C}\left(\mathrm{s}\right)+{\mathrm{O}}_2\left(\mathrm{g}\right)\to {\mathrm{CO}}_2\left(\mathrm{g}\right)+\mathrm{Heat}(393\mathrm{kJ}/\mathrm{mol}) \\ \mathrm{Carbon}\mathrm{Oxygen}\mathrm{Carbon} \\ \mathrm{dioxide} \end{gathered}$$