Question

When HCl(g) reacts with NH3(g) to form NH4Cl(s), 42.1 kcal of energy are evolved for each mole of HCl(g) that reacts. Write a balanced equation for the reaction with an energy term in kcal as part of the equation.

Answer 1

\[HCl (g) + NH _{3} (g) \rightarrow NH _{4}Cl (s) \Delta H=-42.1kcal\]