When hydrogen gas is burnt in chlorine, 2000 cals of heat is liberated during the formation of 3.65 g of HCl. ΔH of formation of HCl is:
Calculate the volume fo HCL gas formed and chlorine gas required when 40 mL of methane reacts completely with chlorine at STP. CH4+2Cl2→CH2Cl2+2HCl