CS2(l) +3Cl2 (g) --> CCL4 (l)+S2Cl2(l) is the given equation in which Carbon Tetrachloride( is a common commerical solvent .) can be formed by the mixing of Cl2 gas with carbon disulfide . it is determined if CS2 of 2.500 grams mix with an excess of chlorine gas , 9.310 Kilo joule of heat is evolved. What sort of reaction is this , Is the reaction exotermic also find out delta H for the reaction?