Chemistry Practical class XI, XII (11,12)
4. TO STANDARDISE THE BENCH SULPHURIC ACID AGAINST THE STANDARD ALKALI (NAOH) SUPPLIED, AND TO EXPRESS THE CONCENTRATION IN :
A) NORMALITY B) GM/LITRE C) MOLARITY AND D) PERCENTAGE THEORY: Reaction H₂SO4 + 2NaOH —--->Na₂SO4+ 2H₂O Ionically, 2H+ + 20H- —----> 2H₂O Bench acids…
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12. TO INVESTIGATE THE PHENOMENON OF DIFFUSION.
THEORY: A. Gaseous Diffusion : Diffusion of gasses means the intermixing of gasses through each other in spite of gravitation.…
11. TO DETERMINE THE SOLUBILITY OF THE GIVEN SOLUBLE SOLID AT THE LABORATORY TEMPERATURE.
THEORY: The solubility of a substance at a particular temperature is the amount of the substance in gm required to…
10. TO PREPARE 250 ML OF A STANDARD DECINORMAL SOLUTION OF MOHR’S SALT. AND TO USE IT TO FIND THE MOLAR CONCENTRATION OF THE GIVEN KMnO4 SOLUTION.
THEORY: Mohr's salt is ferrous ammonium sulphate which is more stable than ordinary ferrous sulphate. Hence, it is often used…
9. TO STANDARDISE THE GIVEN KMnO4 SOLUTION AGAINST THE STANDARD OXALIC ACID SOLUTION (PRIMARY STANDARD).
THEORY: It is a redox titration between acidified KMnO4 and oxalic acid. Formula unit equation 2KMnO4+ 3H₂SO4 + 5H₂C₂O4 —--------->…
