Question 268482

2.Hydrogen gas, H2, reacts explosively with gaseous chlorine, Cl2, to form hydrogen chloride, HCl (g). What is the enthalpy change for the reaction of 1 mole of H2 (g) with 1 mole of Cl2 (g) if both the reactants and products are at standard state conditions? The standard enthalpy of formation of HCl (g) is

-92.3 kJ/mol.