Benzene and naphthalene form an ideal solution at room temperature. For this process, the true statement(s) is (are)
- $?G$ is positive
- $?S_{system}$ is positive
- $?S_{surroundings} = 0$
- $?H = 0$
The Correct Option is D
Solution and Explanation
According to Raoult's law, for an ideal solution
$\, \, \, \, \, \, \, \, \, \, \, \, ?H = 0, ? V_{mm} = 0$
From the relation
$ \, \, \, \, \, \, \, \, \, \, \, \, \, \, ?G = ?H - T?S$
Since, $\, \, \, \, \, \, \, \, \, \, \, \, \, \, \, \, \, \, \, \, ?H = 0$
$\therefore \, \, \, \, \, \, \, \, \, \, ?G = - ve$
i.e. less than zero, and $?S_{sys} = + ve$
i.e. more than zero.
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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.