Choose the correct statement
- $K _{ H }$ value is same for a gas in any solvent
- Higher the $K_{H}$ value more the solubility of gas
- $K _{ H }$ value increases on increasing the temperature of the solution
- none of the above
The Correct Option is D
Solution and Explanation
The question asks us to choose the correct statement regarding Henry's Law constant, denoted as $K_{H}$. Let's evaluate each of the statements given in the options:
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Statement 1: $K_{H}$ value is same for a gas in any solvent.
This statement is incorrect. The Henry's Law constant $K_{H}$ is specific to the gas-solvent combination. It depends on the nature of the gas, the solvent, and the temperature. Hence, $K_{H}$ can vary with different solvents.
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Statement 2: Higher the $K_{H}$ value more the solubility of gas.
This statement is also incorrect. Solubility of a gas in a liquid is inversely proportional to Henry's Law constant $K_{H}$. This means, if $K_{H}$ is high, the solubility of the gas is low, and vice versa. Therefore, higher $K_{H}$ value implies lower solubility of the gas.
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Statement 3: $K_{H}$ value increases on increasing the temperature of the solution.
This statement is correct. According to Henry's Law, as the temperature of a solution increases, the solubility of gases decreases, and consequently, the value of $K_{H}$ increases. This statement correctly describes the relationship between temperature and Henry's Law constant.
Now, we need to determine why "none of the above" is marked as the correct answer. On reviewing the statements, Statement 3 is actually correct. Therefore, there seems to be a discrepancy in the problem, as it indicates "none of the above" as the correct answer. Based on the scientific understanding of Henry's Law, Statement 3 should be the correct one.
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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.