The reaction between lithium metal and chlorine gas is described by the following thermochemical equation:
Li(s) + ½Cl2(g) = LiCl(s) ΔH = -409 kJ mol-1
What will be the enthalpy change (to 2 significant figures) for the reaction when 1.5 g of lithium metal reacts with chlorine gas at constant pressure?
The relative atomic mass of lithium is 7.0.