Q58. AB2 is 10% dissociated in water to A2+ and B− . The boiling point of 10. 0 molal aqueous solution of AB2 is-- ∘C. (Round off to the Nearest Integer). [Given : Molal elevation constant of water Kb = 0. 5 K kg mol−1 boiling point of pure water = 100°C]
What This Question Tests
This problem involves calculating the boiling point elevation of an electrolyte solution, requiring the use of the van't Hoff factor to account for its dissociation in water.
Concepts Tested
Formulas Used
ΔTb = i * Kb * m
i = 1 + (n-1)α
📚 NCERT Sections This Tests
1.32 — Calculate The Depression In The Freezing Point Of Water When 10 G Of
Chemistry Class 11 · Chapter 1
1.32 Calculate the depression in the freezing point of water when 10 g of CH3CH2CHClCOOH is added to 250 g of water. Ka = 1.4 × 10–3, Kf = 1.86 K kg mol–1. 1.33 19.5 g of CH2FCOOH is dissolved in 500 g of water. The depression in the freezing point of water observed is 1.00 C. Calculate the van’t Hoff factor and dissociation constant of fluoroacetic acid.
1.36 — 100 G Of Liquid A (Molar Mass 140 G Mol–1) Was Dissolved In 1000 G Of Liquid B
Chemistry Class 11 · Chapter 1
1.36 100 g of liquid A (molar mass 140 g mol–1) was dissolved in 1000 g of liquid B (molar mass 180 g mol–1). The vapour pressure of pure liquid B was found to be 500 torr. Calculate the vapour pressure of pure liquid A and its vapour pressure in the solution if the total vapour pressure of the solution is 475 Torr. 29 Solutions Reprint 2025-26
1.34 — Vapour Pressure Of Water At 293 K Is 17.535 Mm Hg. Calculate The Vapour
Chemistry Class 11 · Chapter 1
1.34 Vapour pressure of water at 293 K is 17.535 mm Hg. Calculate the vapour pressure of water at 293 K when 25 g of glucose is dissolved in 450 g of water.
📋 Question Details
- Chapter
- Solutions
- Topic
- Colligative Properties
- Year
- 2021
- Shift
- 16 Mar Shift 1
- Q Number
- Q58
- Type
- Numerical
- NCERT Ref
- Class 12 Chemistry Ch 2: Solutions
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