4. A sample containing 10.0 mL of 0.300 M H2C2O4 is mixed with 5.00 mL 0.0500 M KMnO4. The purple color of the permanganate disappears after 37.5 s. a. Calculate the initial concentrations of KMnO4 and H2C2O4 in the mixture. (Hint: use the dilution equation. What is the final volume of the solution?)

Phosgene (carbonyl chloride), cocl2, is an extremely toxic gas that is used in manufacturing certain dyes and plastics. phosgene can be produced by reacting carbon monoxide and chlorine gas at high temperatures: co(g) cl2(g)⇌cocl2(g) carbon monoxide and chlorine gas are allowed to react in a sealed vessel at 477 ∘c . at equilibrium, the concentrations were measured and the following results obtained: gas partial pressure (atm) co 0.830 cl2 1.30 cocl2 0.220 what is the equilibrium constant, kp, of this reaction