Question:
If for a sucrose solution, elevation in boiling point is $0.1^{\circ} C, $ then what will be the boiling point of $NaCl$ solution for same molal concentration?
If for a sucrose solution, elevation in boiling point is $0.1^{\circ} C, $ then what will be the boiling point of $NaCl$ solution for same molal concentration?
Updated On: Jun 23, 2023
- $ 0.1^{\circ} C $
- $ 0.2^{\circ} C $
- $ 0.08^{\circ} C $
- $ 0.01 ^{\circ} C $
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The Correct Option is B
Solution and Explanation
Elevation in boiling point is a colligative property as it depends upon the number of particles.
$\Delta T_{b} \propto n$
For sucrose, $n=1,\, \Delta T_{b}=0.1^{\circ} C$
For $NaCl,\, n=2,\, \Delta T_{b}=0.2^{\circ} C$
$\Delta T_{b} \propto n$
For sucrose, $n=1,\, \Delta T_{b}=0.1^{\circ} C$
For $NaCl,\, n=2,\, \Delta T_{b}=0.2^{\circ} C$
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Concepts Used:
Solutions
A solution is a homogeneous mixture of two or more components in which the particle size is smaller than 1 nm.
For example, salt and sugar is a good illustration of a solution. A solution can be categorized into several components.
Types of Solutions:
The solutions can be classified into three types:
- Solid Solutions - In these solutions, the solvent is in a Solid-state.
- Liquid Solutions- In these solutions, the solvent is in a Liquid state.
- Gaseous Solutions - In these solutions, the solvent is in a Gaseous state.
On the basis of the amount of solute dissolved in a solvent, solutions are divided into the following types:
- Unsaturated Solution- A solution in which more solute can be dissolved without raising the temperature of the solution is known as an unsaturated solution.
- Saturated Solution- A solution in which no solute can be dissolved after reaching a certain amount of temperature is known as an unsaturated saturated solution.
- Supersaturated Solution- A solution that contains more solute than the maximum amount at a certain temperature is known as a supersaturated solution.