Lowering of vapour pressure of 30% of aqueous solution of glucose. (in mmHg)
Given: PH2O = 760 mm of Hg
Given: PH2O = 760 mm of Hg
Solution and Explanation
Pressure Calculation
We are solving for the partial pressure of a gas using the given proportionality:
\(\frac{760 - x }{ x} = \frac{(\frac{30 }{ 180}) }{ (\frac{70 }{ 18})}\)
Simplify the terms:
\(\frac{(760 - x) }{ x} =\frac{ 3 }{ 70}\)
Rearrange to solve for x:
x = 728.7 mm Hg
Round to the nearest integer:
x ≈ 729 mm Hg
Final Answer:
The partial pressure is 729 mm Hg.
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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.