In Henry's Law, k represents the Henry's law constant.
Henry's Law describes the solubility of a gas in a liquid. The law is mathematically expressed as:
C = kPgas
Where:
- C is the solubility of a gas at a fixed temperature in a particular solvent (measured in units of M or mL gas/L).
- k is the Henry's law constant (often measured in units of M/atm).
- Pgas is the partial pressure of the gas (often measured in units of atm).
The Henry's Law constant (k) is therefore, a proportionality constant that relates the solubility of a gas to its partial pressure. The value of k is specific to a particular gas, solvent, and temperature. It reflects how easily that gas dissolves in that liquid. A higher k means the gas is more soluble.
