27. Solving a chemistry problem

3. The process is represented by the following equation: SO2 Cl2↔ SO2Cl2; ΔH < 0. Write the expressions: - for the rate of the forward reaction; - for the speed of the reverse reaction; - for the chemical equilibrium constant. Where does the equilibrium shift when a) the pressure in the system decreases; b) with increasing temperature; c) with increasing concentration of Cl2?