9. In standardizing roughly 0.05M H, SO, solution,1.325g of pure an hydrous sodium carbonate were made up to 250cm' and 25cm' of the solution needed 23.5 cm of
the acid. Calculate the concentration of the acid in gom*. If 906cm? of the acid
were left after the titration, how many cm' of water must be added to the
remaining acid to make it exactly 0.05M?(Ans 5.212, 57.82) SOMEONE PLEASE EXPLAIN HOW TO DO IT!!

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 .