Question

Solutions 1. Identify the solvent and solute(s) in each of the following solutions. Note that there may be more than one solute in a solution. A 20 g of calcium chloride CaCl2 dissolved in 100 g of water. Solvent Solute(s) B Air which contains 20.95% oxygen, 0.93% argon, 78.09% nitrogen and 0.04% carbon dioxide. Solvent Solute(s) C Rubbing alcohol which consists of 70% isopropyl alcohol and 30% water. Solvent Solute(s) D Alloy 7705 which consist of 6% zinc, 2.3% magnesium, 1.5% copper, 88% aluminum and small amounts of other elements. Solvent Solute(s) 2. Purified water does not conduct electricity. It can be prepared by reverse osmosis, distillation or passage through deionizing resin beds. One of the tests for the quality of purified water is to test its conductivity. Does tap water conduct electricity? Can you provide an explanation regarding the difference in conductivity observed between tap water and purified water?

Answer 1

mixtuse of solute and Solurnt Solution Homiyenes Solvent Sulestance fresent in lage amount Into which all other 3olutes are diso ved Solufe- Paesent in smal antwhich is clisielved in olunt A. water is fresent in lasge amaunt so saluent is watee Cac (ealcium chloride) Solute is Nitregen is presentin lasge amount e 7809 an is solvent and all other aie selutes Se wiager Solutes OXYYON, Asgen, Ces C. 1 soproty alcohal is soluent Solute water is Aluminumm C83) Solhent 2 inc, magnesium, ropper and other eleents solutes 1