The concentration of an aqueous solution of naocl can be determined by a redox titration with iodide ion in acidic solution: ocl- (aq) + 2 i- (aq) + 2 h⁺ (aq) → cl⁻ (aq) + i2 (aq) + h2o (l) assume that the black spheres in the buret represent i⁻ ions, the gray spheres in the flask represent ocl⁻ ions, the concentration of the i⁻ ions in the buret is 0.120 m, and the volumes in the buret and the flask are identical. what is the concentration of the naocl in the flask, and what fraction of the i⁻ solution in the buret must be added to the flask to react with all the ocl⁻ ions?

There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of several useful plastics. in the first step, calcium carbide and water react to form acetylene and calcium hydroxide: cac2 (s) + 2h2o (g) → c2h2 (g) + caoh2 (s) =δh−414.kj in the second step, acetylene, carbon dioxide and water react to form acrylic acid: 6c2h2 (g) + 3co2 (g) + 4h2o (g) → 5ch2chco2h (g) =δh132.kj calculate the net change in enthalpy for the formation of one mole of acrylic acid from calcium carbide, water and carbon dioxide from these reactions. round your answer to the nearest kj .