Question

State and explain Henry’s Law.

Answer 1

Hint Henry's law is one of the gas laws. It has many applications that are used in our daily life. It varies with solute, solvent, and temperature.

Complete step by step answer:
- Henry’s law states that at a constant temperature, the amount of a given gas that dissolves in a given type and volume of a liquid is directly proportional to the partial pressure of the gas in equilibrium with that liquid.
- This law is usually denoted by ${{K}_{H}}$. The mathematical representation of Henry’s law is given by

& P\propto C \\\ & \therefore P={{K}_{H}}.C \\\ \end{aligned}$$ Where, P stands for the partial pressure of the gas in the atmosphere above the liquid, C stands for the concentration of the dissolved gas. \- Henry’s law can be referred to as two types. One is Henry’s law of solubility constant and it is denoted by H if the constant is defined in terms of solubility or pressure, and the other is Henry’s law volatile constant and it is denoted by ${{K}_{H}}$ if the constant is defined in terms of pressure or solubility.- For example, carbonated drinks, respiration and the oxygenation of blood etc. \- There are various factors that affect Henry's law, like the nature of the gas, the nature of the solvent, temperature. **Note:** There are some limitations also for Henry's law. This law is only accepted if the molecules of the system are in state of equilibrium. This law fails when the gases are places under extremely high pressure.