Question:
The degree of dissociation $(\alpha)$ of a weak electrolyte $A_xB_y$ is related to van?t Hoff factor $(i)$ by the expression
The degree of dissociation $(\alpha)$ of a weak electrolyte $A_xB_y$ is related to van?t Hoff factor $(i)$ by the expression
Updated On: Jun 23, 2023
- $\alpha=\frac{i-1}{x+y-1}$
- $\alpha=\frac{x+y-1}{i-1}$
- $\alpha=\frac{x+y+1}{i-1}$
- $\alpha=\frac{i-1}{x+y+1}$
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The Correct Option is A
Solution and Explanation
$A_xB_y \rightarrow xA^{y+} + yB^{x-}$
$\alpha = \frac{i-1}{n-1}$
where $n$ is the number of ions produced.
$\alpha = \frac{i -1}{(x+y-1)}$
$\alpha = \frac{i-1}{n-1}$
where $n$ is the number of ions produced.
$\alpha = \frac{i -1}{(x+y-1)}$
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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.