Question

What is the significance of Henry’s Law constant ${K_H}$ ?

Answer 1

To know the significance of Henry’s Law constant ${K_H}$ , we should go through the whole concept of Henry’s Law constant, then we will discuss more about the Henry’s Law Constant and their more rules.

Complete step by step answer:
Henry’s law is expressed mathematically as,
$p = {K_H}x$
where, $p$ is the partial pressure of the gas in vapour phase and $x$ is the mole fraction of the gas in solution.
Thus it is significant from the above equation that, “ higher the value of Henry’s law constant ${K_H}$ at a given pressure, the lower is the solubility of the gas in the liquid”.
In chemistry, Henry's law is a gas law that states that the amount of dissolved gas is proportional to its partial pressure in the gas phase. Importance of Henry's Constant: To increase the solubility of $C{O_2}$ in soft drink and soda water, the bottle is sealed under high pressure.
Henry's law is one of the gas laws, formulated by the British chemist, William Henry, in 1803. It states that: At a constant temperature, the amount of a given gas dissolved in a given type and volume of liquid is directly proportional to the partial pressure of that gas in equilibrium with that liquid.

Note: According to Henry's law, solubility of a gas in a liquid is directly proportional to pressure of gas. KH depends only on the nature of gas, nature of liquid and temperature $(T)$ . As temperature increases, $'{K_H}'$ increases and $'x'$ decreases.