Chemistry Class 12 Lab Experiments

Experiment list of Chemistry Class 12 Lab

1. 1. Determination of one cation and one anion in a given salt (selected from a wide list such as Pb²⁺ Cu²⁺ Al³⁺ Fe³⁺ Mn²⁺ Ni²⁺ Zn²⁺ Co²⁺ Ca²⁺ Sr²⁺ Ba²⁺ Mg²⁺ NH₄⁺ for cations; and CO₃²⁻ S²⁻ SO₃²⁻ NO₂⁻ NO₃⁻ Cl⁻ Br⁻ I⁻ SO₄²⁻ PO₄³⁻ C₂O₄²⁻ CH₃COO⁻ etc. for anions)
2. 2. Standardization of KMnO₄ solution by titrating against a standard solution of either: Oxalic acid or Ferrous ammonium sulphate (Mohr’s salt)
3. 3. Characteristic tests for carbohydrates fats and proteins in pure samples and their detection in given food samples
4. 4. Detection of various functional groups including: Unsaturation Alcoholic Phenolic Aldehydic Ketonic Carboxylic Primary amino groups
5. 5. Preparation of Organic Compounds Aniline yellow or 2-Naphthol aniline dye
6. 6. Preparation of Organic Compounds Dibenzalacetone
7. 7. Preparation of Organic Compounds Acetanilide
8. 8. Preparation of potassium ferric oxalate
9. 9. Preparation of a double salt—either ferrous ammonium sulphate (Mohr’s salt) or potash alum
10. 10. Separation of components in an inorganic mixture containing two cations with significantly different Rf values
11. 11. Separation of pigments from leaf/flower extracts via paper chromatography
12. 12. Variation in cell potential of a Zn/Zn²⁺ || Cu²⁺/Cu cell with changes in electrolyte concentration (CuSO₄ or ZnSO₄) at room temperature
13. 13. Enthalpy change due to hydrogen bonding interaction between acetone and chloroform
14. 14. Enthalpy of neutralization of strong acid and strong base
15. 15. Enthalpy of dissolution of copper sulphate or potassium nitrate
16. 16. Study of reaction rates of the clock reaction between potassium iodate and sodium sulphite using starch as an indicator
17. 17. Study of reaction rates of Reaction of iodide ions with hydrogen peroxide (varying iodide concentration)
18. 18. Effect of concentration and temperature on the reaction rate between sodium thiosulphate and hydrochloric acid
19. 19. Study of the role of emulsifying agents in stabilizing an emulsion
20. 20. Dialysis of one of the prepared sols
21. 21. Preparation of one lyophilic sol (e.g. starch egg albumin gum) and one lyophobic sol
22. 22. Titration to determine hydrochloric acid strength using sodium carbonate standard