A toxicologist studying mustard gas, S(CH2CH2Cl)2, a blistering agent, prepares a mixture of 0.675 M SCl2 and 0.973 M C2H4 and allows it to react at room temperature (20.0°C ).
SCl2(g) + 2 C2H4(g) S(CH2CH2Cl)2(g)
At equilibrium, [S(CH2CH2Cl)2] = 0.350 M. Calculate Kp.