Consider the given plots of vapour pressure (VP) vs temperature (T/K). Which amongst the following options is the…
Solutions · Class 12 · JEE Main Previous Year Question
Consider the given plots of vapour pressure (VP) vs temperature (T/K). Which amongst the following options is the correct graphical representation showing , depression in the freezing point of solvent in a solution?
- a
- b
- c✓
- d
Strategy:\n> A solution freezes when its vapor pressure equals the vapor pressure of the solid solvent. Identify the graph that correctly shows the solution curve below the pure solvent curve and the intersection at a lower temperature ().\n\nAnalysis:\n- The vapor pressure of a solution is always lower than that of the pure solvent at the same temperature.\n- The freezing point is where the solution curve intersects the "frozen solvent" (ice) curve.\n- Because the solution curve is lower, it intersects the ice curve at a point shifted to the left (lower temperature).\n- Graph (c) correctly displays the vapor pressure of the solution as a lower curve and clearly marks the depression on the temperature axis.\n\n
Practice this question with progress tracking
Want timed practice with adaptive difficulty? Solve this question (and hundreds more from Solutions) inside The Crucible, our adaptive practice platform.
More JEE Main Solutions PYQs
Which of the following graph correctly represents the plots of KH at 1 bar gases in water versus temperature? (Gases: O2, N2, He, CH4)
A solution is made by mixing one mole of volatile liquid A with 3 moles of volatile liquid B. The vapour pressure of pure A is 200 mm Hg and that of the solution is 500 mm Hg. The vapour pressure of…
Match List-I (Purification technique) with List-II (Mixture of organic compounds): List-I: (A) Distillation (simple), (B) Fractional distillation, (C) Distillation under reduced pressure, (D) Steam…
'x' g of NaCl is added to water in a beaker with a lid. The temperature of the system is raised from 1°C to 25°C. Which out of the following plots is best suited for the change in the molarity (M) of…
1.24 g of AX2 (molar mass 124 g mol-1) is dissolved in 1 kg of water to form a solution with boiling point of 100.0156°C, while 25.4 g of AY2 (molar mass 250 g mol-1) in 2 kg of water constitutes a…