Aim To study the comparative cleaning capacity of a sample of soap in soft and hard water. Apparatus and Chemicals Three test tube (20 mL) Dropper Test tube stand Three beakers (100 mL) Three glass rods A measuring cylinder (50 mL) A measuring scale Underground water Hard water Distilled water Soap solution Principle Hardness of […]
Aim To study saponification reaction for preparation of soap. Materials Required Two beakers (250 mL) Two test tube A glass rod A measuring cylinder (50 mL) Burner Stand Wire gauge Knife 20% sodium hydroxide solution : 30 mL Distilled water Vegetable oil (cotton seed oil, soyabean oil, palm oil) : 20 mL sodium chloride (common […]
Aim To study the following properties of acetic acid (ethanol acid): Odour Solubility in water Effect on litmus Reaction with sodium bicarbonate Apparatus and Chemicals Test tube Test tube stand Acetic acid Red and blue litmus paper or solution Sodium bicarbonate Principle When pure, acetic acid is a colourless liquid in summer but freezes to […]
Aim a) To observe the action of Zn, Fe, Cu and Al metals on the following salt solutions: ZnSO4 (aq) FeSO4 (aq) CuSO4 (aq) Al2(SO4)3 (aq) b) Arrange Zn, Fe, Cu and Al metals in the decreasing order of reactivity based on the above result. Apparatus and Chemicals Test tubes Test tube stand Distilled water […]
Aim To perform and observe the following reactions and classify them into: i. Combination reactionii. Decomposition reactioniii. Displacement reactioniv. Double displacement reaction A. Action of water on quicklimeB. Action of heat on ferrous sulphate crystalsC. Iron nails kept in copper sulphate solutionD. Reaction between sodium sulphate and barium chloride solutions. Experiment A Aim To perform […]
Experiment A Aim To study the properties of acids (dilute HCl) by their reaction withi) Litmus solution (Blue/Red)ii) Zinc metaliii) Solid Sodium Cabonate Materials Required Test tubes Test tube stand Delivery tube with cork Litmus solutions (blue and red) Zinc metal (granulated) Solid sodium carbonate Sodium hydroxide solution Distilled water Lime water Principle An acid […]
Aim To find the pH of the following samples by using pH paper/universal indicator:(i) Dilute Hydrochloric Acid(ii) Dilute NaOH solution(iii) Dilute Ethanoic Acid solution(iv) Lemon juice(v) Water(vi) Dilute Hydrogen Carbonate solution Materials Required Six test tubes Test tube stand Glass rod Measuring cylinder (10 mL) Standard pH colour chart pH paper Glass rod Dropper Universal […]