Question:
Which one of the following $0.06 \mathrm{M}$ aqueous solutions has lowest freezing point ?
$\mathrm{Al}_{2}\left(\mathrm{SO}_{4}\right)_{3}$
$\mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6}$
KI
$\mathrm{K}_{2} \mathrm{SO}_{4}$
Correct Option: 1
Solution:
$\mathrm{T}_{\mathrm{f}}-\mathrm{T}_{\mathrm{f}}^{\prime}=\mathrm{i} \mathrm{K}_{\mathrm{f}} \cdot \mathrm{m}$
For minimum $\mathrm{T}_{\mathrm{f}}^{\prime}$
'i' should be maximum.
$\begin{array}{ll}\mathrm{Al}_{2}\left(\mathrm{SO}_{4}\right)_{3} & \mathrm{i}=5 \\ \mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6} & \mathrm{i}=1 \\ \mathrm{KI} & \mathrm{i}=2 \\ \mathrm{~K}_{2} \mathrm{SO}_{4} & \mathrm{i}=3\end{array}$
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All Study Material
- JEE Main
- Exam Pattern
- Previous Year Papers
- PYQ Chapterwise
- Physics
- Kinematics 1D
- Kinemetics 2D
- Friction
- Work, Power, Energy
- Centre of Mass and Collision
- Rotational Dynamics
- Gravitation
- Calorimetry
- Elasticity
- Thermal Expansion
- Heat Transfer
- Kinetic Theory of Gases
- Thermodynamics
- Simple Harmonic Motion
- Wave on String
- Sound waves
- Fluid Mechanics
- Electrostatics
- Current Electricity
- Capacitor
- Magnetism and Matter
- Electromagnetic Induction
- Atomic Structure
- Dual Nature of Matter
- Nuclear Physics
- Radioactivity
- Semiconductors
- Communication System
- Error in Measurement & instruments
- Alternating Current
- Electromagnetic Waves
- Wave Optics
- X-Rays
- All Subjects
- Physics
- Motion in a Plane
- Law of Motion
- Work, Energy and Power
- Systems of Particles and Rotational Motion
- Gravitation
- Mechanical Properties of Solids
- Mechanical Properties of Fluids
- Thermal Properties of matter
- Thermodynamics
- Kinetic Theory
- Oscillations
- Waves
- Electric Charge and Fields
- Electrostatic Potential and Capacitance
- Current Electricity
- Thermoelectric Effects of Electric Current
- Heating Effects of Electric Current
- Moving Charges and Magnetism
- Magnetism and Matter
- Electromagnetic Induction
- Alternating Current
- Electromagnetic Wave
- Ray Optics and Optical Instruments
- Wave Optics
- Dual Nature of Radiation and Matter
- Atoms
- Nuclei
- Semiconductor Electronics: Materials, Devices and Simple Circuits.
- Chemical Effects of Electric Current,
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