Ammonia (NH3(g), AH = -46.19 kJ/mol) reacts with hydrogen chloride (HCl(g), AH = -92.30 kJ/mol) to
form ammonium chloride (NH4Cl(s), AH = -314.4 kJ/mol) according to this equation:
NH3(g) + HCl(9) ► NH4Cl(s)
What is AHxn for this reaction?