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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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16. TO INVESTIGATE THE EFFECT OF PARTICLE SIZE ON THE RATE OF A REACTION
THEORY: The rate of a reaction depends on the particle size also, the greater the surface area of the reactant…
15. TO DETERMINE THE ENTHALPY OF NEUTRALIZATION OF A STRONG ACID AND A STRONG BASE
THEORY: Enthalpy of neutralization is the amount of heat change that takes place when 1 gm equivalent of an acid…
14. TO FIND THE APPROXIMATE pH OF SOME VEGETABLE AND FRUIT JUICES BY USING UNIVERSAL INDICATOR AND PH PAPER.
THEORY: A universal indicator or a ph paper contains a mixture of several acid base indicators and hence can show…
13. TO DETERMINE THE APPROXIMATE PH OF SOME AQUEOUS SOLUTIONS (IN ACIDIC RANGE) BY THE INDICATOR METHOD.
THEORY: All aqueous solutions contain certain amounts of hydrogen ion concentrations. pH of a solution is defined as the negative…
