VOLUMETRIC CALCULATIONS:- NUMERICALS FOR IIT JEE / ISEET

VVVOLUMETRIC CALCULATION :- TRY TO SOLVE FOLLOWING NUMERICALS FOR IIT JEE/ ISEET

1.  A solution contains 1.2046* 10²⁴  HCl molecule in one dm³ of the solution. What is the normality of the solution?
2.   A solution containing 0.275 gm of NaOH required 35.4 ml of HCl for neutralization. What was the normality of the HCl?
3.   The formula mass of an acid is 82.0. In a titration, 100 cm³ of a solution of this acid containing 39.0 gm of this acid per litre were completely neutralized by 95.0 c.c. of NaOH per litre. What is the basicity of the acid?
4.  A solution contains Na₂CO₃ and NaHCO₃. 10 ml. of the solution required 2.5 ml of 0.1 M H₂SO₄ for neutralization using phenolphthalein as indicator. Methyl orange is than added when a further 2.5 ml of 0.2 M H₂SO₄ was required. Calculate the amount of   Na₂CO₃ in one litre of the solution.
5.    500 ml of a solution contains 2.65 gm of Na₂CO₃ and 4 gm of caustic soda; 20 ml. of this solution have been titrated each time against N/ 10 H₂SO_4.  Find the titer values if (i) methyl orange is taken as indicator, and also if (ii) phenolphthalein is taken as an indicator.
6.  25 ml. of a solution containing NaOH and Na₂CO₃ when titrated against N/2 HCl using phenolphthalein as indicator required 40 ml. of HCl. The same vol. of mix. When titrated against N/2 HCl using methyl orange as indicator required 45 cc of HCl. Calculate the amounts of NaOH and Na₂CO₃ in 1 litre of the mixture.
7.     Acidified KMnO₄   oxidizes oxalic acid to CO_2. what vol. in the litres of 10^-4 M KMnO₄ required to completely oxidize 0.5 litre of 10^-2 M oxalic acid in acid medium?