Q40.What happens to freezing point of benzene when small quantity of napthalene is added to benzene? (1) Increases (2) Remains unchanged (3) First decreases and then increases (4) Decreases
What This Question Tests
This question directly tests the understanding of freezing point depression, a colligative property, which states that adding a non-volatile solute to a solvent lowers its freezing point.
Concepts Tested
Formulas Used
ΔT_f = K_f m
📚 NCERT Sections This Tests
1.31 — The Depression In Freezing Point Of Water Observed For The Same Amount Of
Chemistry Class 11 · Chapter 1
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.
1.32 — 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.
1.35 — Henry’S Law Constant For The Molality Of Methane In Benzene At 298 K Is
Chemistry Class 11 · Chapter 1
1.35 Henry’s law constant for the molality of methane in benzene at 298 K is 4.27 × 105 mm Hg. Calculate the solubility of methane in benzene at 298 K under 760 mm Hg.
📋 Question Details
- Chapter
- Solutions
- Topic
- Colligative properties
- Year
- 2024
- Shift
- 30 Jan Shift 1
- Q Number
- Q40
- Type
- MCQ
- NCERT Ref
- Class 12 Chemistry Ch 2: Solutions
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