QUESTIONS (20) 1-a) Deseribe the preparation of 2L of 0.12MHClO from the commercial reagent [71% HClO4(w/w)d:1.67](MwHClO:100.5g/mol) b) What is the mass in grams of solute in 1b. 37mL of 5.75.104M benzoic acid (C5H5COOH)(Mw:122g/mol) 2b. 4.50L of a solution that contains 31.7ppm of SnCl2. (15) 2- Which has the greater buffer capacity: (a) a mixture containing 0.1 mol of NH3 and 0.2mol of NH4Cl or (b) a mixture containing 0.05mol of NH and 0.1 mol of NH4Cl ? Please, explain it. ( Ka : 5.7.1010)