Volumetric Analysis Numericals Class 12 NEB🇳🇵Part-2

🖋️In this video, I'll be continuing my explanation of volumetric analysis numericals for class 12 NEB Board.

🎯If you're struggling with understanding volumetric analysis numericals for class 12 chemistry, be sure to watch this video.

👉In it, I'll be explaining the concepts in a way that is easy to understand and that will help you to success in your numericals studies!

✍️In this video, I'm continuing my explanation of volumetric analysis numerics, this time covering class 12 chemistry.

Timestamps:
0:00 How many ml of conc. HNO3 of specific gravity 1.41 containing 69% by mass are required to prepare 500 ml of 0.5N HNO3?
2:28 Liquor ammonia kept at a corner of your chemistry lab is 25% (w/w) NH3 and its specific gravity is 0.91. Find the molarity of liquor ammonia.
3:19 A solution of conc. Hydrochloric acid contain 38% HCl by mass
What is the molarity of this solution if the density of the solution 1.19 g/cc?
What volume of the conc. HCl is required to neutralize 1 litre of 0.1 M NaOH solution?
5:24 A commercial sample of sulphuric acid has specific gravity 1.8. 10 ml of this acid was diluted upto 1 litre with water. 10 ml of this diluted acid required 30 ml of N/10 NaOH for complete neutralization. Calculate the percentage purity of H2SO4 in the commercial sample.
9:22 100 ml of 0.1M HCl is mixed with 50 ml of 0.1M KOH. Calculate the concentration of acid in terms of gm/litre in the resulting solution.
12:05 What volume of N/10 and N/2 HCl should be mixed to get two litres of N/5 HCl?
14:07 What volume of 12M NaOH and 2M NaOH should be mixed to get 2 litres of 9M NaOH solution?
14:40 Two litres of 1M HCl is mixed with one litre of 1M NaOH solution. Calculate the strength of the salt formed.
16:01 5 gm of a diacidic base is completely neutralized by 50 ml 2N HCl. Find the molecular weight of the base.
18:32 1 gm of NaOH is added to 2 litres of xM H2SO4 solution, so that the pH of the resulting solution is 7. Find the value of x.
21:03 10 gm of NaOH was added to 200 cc of N/2 (f = 1.5) H2SO4. The volume was diluted to two litres. Predict whether the dilute solution is acidic, basic or neutral and also calculate the resulting molarity of the dilute solution.
25:08 7.5 gm of a dibasic acid is dissolved in water and the solution is made up to 250 cc. then 25 cc of this acid requires 16.3 cc 1N NaOH for complete neutralization. Calculate the molecular weight of the acid.
27:34 7.35 gm of a dibasic acid was dissolved in water and diluted to 250 ml. 25 ml of this solution was neutralized by 15 ml of 1N NaOH solution. Find the equivalent weight and molecular weight of the acid.
28:31 0.012 gm of a divalent metal is completely dissolved in 40 cc of N/10 HCl. The excess of acid required 15 cc of N/5 NaOH for neutralization. Find the atomic weight of the metal.
31:56 0.8 gm of a divalent metal was completely dissolved in 100 cc of 1.28N HCl and the solution was diluted to 200 cc. Then 50 cc of this solution required 54.6 cc of 0.22 N NaOH for complete neutralization. Find the atomic weight of the metal.
35:24 x gm of a metal (Equivalent Weight = 12) was completely dissolved in 100 cc of N/2 HCl and the solution was diluted to 500 cc. Then 25 cc of this solution required 17.5 cc of N/10 NaOH for complete neutralization. Find the value of x.
37:35 Acid is generated in stomach. The doctor prescribes him anta-acid. By taking three anta-acid tablets, the strength of acid decreases from N/10 to N/100. If the fluid material is 1000 cc, calculate the amount of base present per anta-acid tablet.(eq. wt. of the base in anta-acid = 100)
40:13 12 gm of commercial zinc is made to react with excess dilute H2SO4. The total volume of H2 gas liberated was found to be 4.2 litres at 570 mm of Hg pressure and 279 K. Determine the percentage purity of the zinc (At. Mass of Zn = 65).
42:59 How many ml of a 0.1 M HCl are required to react completely with 1 gm mixture of Na2CO3 and NaHCO3 containing equimolar amount of the two.
46:20 2gm of dolomite was dissolved in 63.37mL of 1N (f=0.99) HCl and the resulting solution was made up to 250mL. 25mL of N/10 NaOH solution was required to neutralize 30mL of diluted solution. Calculate the percentage composition of CaCO3 and MgCO3 in dolomite.
50:09 A solution of 2.5 gm of a sample of Na2CO3 contaminated with another salt was titrated with N/2 HCl of which 55 cc were required for complete neutralization. Calculate the percentage of anhydrous Na2CO3 in the sample.

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Volumetric analysis class 12 numericals - Part 1
   • Volumetric Analysis Numericals Class 12 NE...  

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