Q58.If the degree of dissociation of aqueous solution of weak monobasic acid is determined to be 0 . 3, then the observed freezing point will be _____ % higher than the expected/theoretical freezing point. (Nearest integer).
What This Question Tests
This question combines the concepts of freezing point depression and the Van't Hoff factor to calculate the percentage increase in observed freezing point due to dissociation of a weak acid.
Concepts Tested
Formulas Used
ΔTf = i Kf m
i = 1 + α(n-1)
📚 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.
1.31 — The Depression In Freezing Point Of Water Observed For The Same Amount Of
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1.31 The depression in freezing point of water observed for the same amount of acetic acid, trichloroacetic acid and trifluoroacetic acid increases in the order given above. Explain briefly.
1.34 — Vapour Pressure Of Water At 293 K Is 17.535 Mm Hg. Calculate The Vapour
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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 (Freezing Point Depression)
- Year
- 2023
- Shift
- 10 Apr Shift 1
- Q Number
- Q58
- Type
- Numerical
- NCERT Ref
- Class 12 Chemistry Ch 2: Solutions
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