Question

For p=K$_H$​x, here K$_H$​ is:

• A. Cryoscopic constant
• B. Henry’s Law constant
• C. Boyle’s constant
• D. Rate constant

Answer 1

The Correct Option is B

The given equation is p = K_Hx, which represents Henry's Law in chemistry. In this expression:

• p refers to the partial pressure of the solute gas above the solution.
• x is the mole fraction of the solute gas in the solution.
• K_H is the proportionality constant known as Henry’s Law constant.

Henry's Law states that the amount of gas that dissolves in a liquid at a given temperature is directly proportional to the partial pressure of the gas above the liquid. Hence, in the equation, K_H is the Henry’s Law constant.

Considering the options given, the correct answer is: Henry’s Law constant.

Answer 2

K_H is the Henry’s Law constant, which describes the relationship between the solubility of a gas in a liquid and the partial pressure of the gas above the liquid. Henry's Law states that, at a constant temperature, the amount of gas that dissolves in a liquid is directly proportional to the partial pressure of that gas.

Mathematically, this relationship is represented as:
C = K_H * P
where:

• C is the concentration of the dissolved gas in the liquid (mol/L),
• P is the partial pressure of the gas (atm),
• K_H is the Henry’s Law constant (mol/L·atm).

Henry’s Law constant is crucial in understanding phenomena such as gas exchange in biological systems, the carbonation of soft drinks, and the behavior of gases in natural water bodies. It can vary with temperature, as higher temperatures generally reduce the solubility of gases in liquids. Therefore, knowing the value of K_H is important for predicting how gases behave when in contact with liquids.