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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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8. TO PREPARE 100 ML OF A DECINORMAL SOLUTION OF OXALIC ACID (PRIMARY STANDARD).
THEORY: Oxidation half reaction of oxalic acid is C₂O4 -- – 2e —----> 2CO₂ 1 mol 2…
7. TO DETERMINE THE PERCENTAGE OF PURE AMMONIUM CHLORIDE IN THE GIVEN MIXTURE OF AMMONIUM CHLORIDE AND SODIUM CHLORIDE VOLUMETRICALLY.
THEORY: A definite wt. of the given mixture is allowed to react with a known excess volume of standard (strong)…
6. TO FIND THE EQUIVALENT WEIGHT OF THE GIVEN METAL VOLUMETRICALLY.
THEORY: Suppose, the given metal is magnesium. A definite weight of the metal is taken in the chemical balance. It…
5. TO FIND THE STRENGTH OF THE BENCH NAOH AGAINST THE STANDARD ACID HCL SUPPLIED.
THEORY: Reaction HCL + NaOH —--------> NaCl + H₂O Ionically, H ++ OH- —----------->H₂O Here, the bench alkali NaOH is…
