Chapter 10, Problem 61E

Question 57 through 62: Thermochemical equations may be written in two ways, either with an energy term as a part of the equation or with ${\Delta }_{r}H$ set apart from the regular equation. In the questions that follow, write both forms of the equations for the reactions described. Recall that state designations are required for all substances in a thermochemical equation.

The reaction in an oxyacetylene torch is highly exothermic, releasing $1.31\times {10}^3\text{kJ}$ of heat to the environment for every mole of acetylene, ${\text{C}}_{\text{2}}{\text{H}}_{\text{2}}\left(\text{g}\right)$, burned. The end products are gaseous carbon dioxide and liquid water.