From the following reaction the mustard gas and a blistering agent can be produced by the reaction
SCl2(g) + 2 C2H4(g) ???? S(CH2CH2Cl) 2
Initially [SCl2] = 0.675 M and [C2H4] = 0.973 M, and after the reaction reaches equilibrium [S(CH2CH2Cl) 2] = 0.350. how can describe the equilibrium constant for this reaction?