Page 9 - Chemistry - XI

6. Systematic Qualitative Analysis 48–82
Experiment - 19: To analyse the given salt for acidic and basic radicals present in it. 74

7. Qualitative Analysis-Organic Compounds 83–86
Experiment - 20: Detection of nitrogen, sulphur, chlorine, bromine and iodine in an 83
organic compound.

8. Investigatory Projects 87–106

Project - 1: To test the bacterial contamination of water through sulphide ion concentration. 87

Project - 2: To study the methods of purification of water. 88

Project - 3: Testing the hardness, presence of iron, fluoride, chloride, etc. in drinking 90
water obtained from different regions and a study of the cause of presence
of these ions above permissible limits.

Project - 4: To investigate the foaming capacity of different washing soaps and the effect 92
of addition of sodium carbonate on them.

Project - 5: Study of acidity of different samples of tea leaves and reasons for the variations 95
in colour of tea prepared from these leaves.
Project - 6: To study the relationship between the rates of evaporation of different liquids 96
and their chemical constitution.

Project - 7: To determine tensile strength of various fibres and effect of acid and base on 97
tensile strength.
Project - 8: To analyse the presene of carbohydrates, proteins and fats in various fruits 100
and vegetables.

Appendix - I : Periodic Table of Elements 107

Appendix - II : Atomic Number and Molar Mass of Some Important Elements 108–109

Appendix - III : Standard Potentials at 298 K in Electrochemical Series 110–111

Appendix - IV : Some Useful Tables 112–114

Appendix - V : Some Useful Conversion Factors 115–116

Appendix - VI : Log Tables 117–120