Volumetric Analysis Numerical Solution || Class 12 Chemistry || Dreamland's Pioneer Chemistry

Volumetric Analysis - Grade XII Chemistry || Numerical Solution

FOR PDF:
https://www.anupamsuwar.com.np/2022/0...

QUESTIONS
1. How many moles of solute are present in the following solutions?
a. 250mL of 2M glucose solution
b. 500mL of 1.5M sulphuric acid solution?
2. Convert the followings:
a.200mL of 2N Na₂SO4 into no. gram equivalent
b. 2.5M H3PO4 into normality
c. 9M H₂SO4 into gram/litre
3. Find the normality of 500mL solution of sodium hydroxide containing 30g NaOH?
4. What is the normality of 20cc of 2M phosphoric acid solution?
5. Calculate the normality of 5% (w/v) H₂SO4.
6. How many gram of oxalic acid is needed to prepare decinormal solution in 250 ml.?
7. What volume of 5% Na,CO, is required to neutralize a litre of N/10 H₂SO4?
8.What volume of 12M NaOH and 2M NaOH should be mixed to get 2L of 9M NaOH solution?
9. What mass of 90% pure limestone is required to neutralize the 2L decinormal solution of HCI?
10. x mL of 5N HCI was diluted to 1L of normal solution. Find the value of x.
11. How many moles of H₂SO4 are required to neutralize 4L of 2N NaOH solution?
12. 25cc of a solution of Na-CO, require 28cc of N/10 HCl for neutralization. Calculate the strength of Na₂CO3, solution in terms of a, normality b. g/litre c.% d. molarity.
13. A solution is found to be 0.63% by volume of nitric acid. Convert the concentration of this solution into a. Gram per litre b. Normality c. Molarity d. Percentage
14. 1.05g of carbonate of a bivalent metal 'M' is dissolved in 50mL of IN HCI and excess of the acid is neutralized by 25 ml. of IN NaOH. Calculate the equivalent weight and atomic weight of the metal.
15. The specific gravity of pure HNO, is 1.522. What volume of this acid is needed to neutralize 100g of KOH?
16. What volume of water is added to 25 mL of seminormal sulphuric acid solution to make it exactly centi normal?
17. X g of CaCO, react completely with 50mL of N/10 (f=1.5) hydrochloric acid solution. Find the value of X.
18. 20mL of 0.5M HCl, 30mL of 0.2N H₂SO4, and 50 mL of 0.08N HNO3, are mixed together.20mL of this acid mixture was needed to neutralize 30mL of NaOH solution. Find the normality of NaOH solution.
19. (a) Calculate molarity of 38% by mass of conc. HCl, if the density of pure concentrated HCl is 1.2g/mL.
(b) What volume of conc. HCI is required to neutralize 1L of 0.1M NaOH solution?
20. 100g of HCI solution of specific gravity 1.17 contains 33.4g HCl. How many litre of an acid solution of this concentration would be required to neutralize 5L of a solution of NaOH containing 0.042g of NaOH per mL?
21. Two acid solutions A and B are titrated separately with 20mL of IN NaOH solution. It required 10mL of A and 40mL of B complete neutralization. Calculate the volume of A and B required to prepare 1 litre of IN acid solution.
22. 15.4g of divalent metal was dissolved in 100 ml of 2M H₂SO4 (f = 1.01). The excess acid of the mixture required 30 ml. of IN NAOH for complete neutralization. Find the atomic mass of the metal.
23. 25mL of fairly concentrated sulphuric acid is diluted in a 250ml volumetric flask. 25mL of the diluted solution required 20ml of N/10 (f- 1.05) NaOH solution for complete neutralization. Find normality and molarity of the concentrated acid solution.
24. 0.84g of acid of molecular weight 150 was dissolved in water and made up to 100ml.. 25mL of this solution required 28mL N/10 NaOH solution for complete neutralization. Calculate the basicity of the acid.
25. 4g of NaOH was added to 20cc of 2N H₂SO4 solution and the volume was diluted to one litre. Predict whether the dilute solution is acidic, basic, or neutral, and also calculate the resulting normality of the dilute solution in terms of gram/litre.
26. If 20 mL of 0.5N NaOH is mixed with 30ml of 0.3N HCI, is the resulting solution acidic or basic? Calculate normality for the acidic or basic final solution.
27. If 100mL of 1M H₂SO4 and 100mL of 1M NaOH are mixed, calculate the concentration of the resulting solution for acid left and salt formed.
28. 5g of oxalic acid crystals (H₂C204xH₂O) are dissolved in water and the solution is made up to 250ml. If 25mL of this solution required 15.9mL of NaOH for neutralization. Calculate water of crystallization of oxalic acid crystals.
29. 10g sample of Godavari marble requires 170mL of 0.92N HCI till effervescence ceases. Find percentage purity of CaCO, in the sample.
30. 0.5g of a mixture of NH4CI and NaCl was boiled with 25mL of 0.95N NaOH in a vessel till all the ammonia is expelled. The residual solution was cooled and then made up to 100mL. It was found that 10mL of the diluted residual solution neutralizes 16mL of standard N/10 (f = 1.06) H₂SO4 Calculate % of pure NH4Cl in the mixture.
31. 2.84mL of "Chamber's acid" is made up of a litre solution. 50mL of this solution neutralize 38.2mL of N/10 Na₂CO3 solution. Find the percentage of sulphuric acid in the "Chamber acid", if its specific gravity is 1.71.

© Anupam Suwar