[SOLVED] Reaction Mechanism (Shouldn't Be Too Difficult) 1. The problem statement, all variables and given/known data Write the equation for the overall reaction and identify any reaction intermediates: STEP 1: Cl2---> Cl + Cl STEP 2: Cl + CO---> COCl STEP 3: COCl + Cl2---> COCl2 + Cl 2. Relevant equations See above 3. The attempt at a solution I understand how to do this when there is only one step...... the overall equation is just the products from Step 1 make the reactants from Step 2, but having a third step confuses me. My guess would be something such as Cl2+CO---> COCl2 + Cl, and COCl as a reaction intermediate, but I'm not so sure.