Question

At the same temperature, hydrogen gas is more soluble in water than helium gas. Which one of them have higher value of kh

Answer 1

the value of KH of helium is more than the value of KH of hydrogen.

the value of KH depends on the nature of gas , greater the value of KH , the lesser is the solubility.

Answer 2

Helium gas has the higher $\mathrm{K}_{\mathrm{H}}$ value.

Explanation:

• “The partial pressure of a gas above a liquid is “directly proportional” to the concentration in liquid under thermodynamic equilibrium”.

• According to the Henry’s law, the “solubility of gas” in liquid is ‘proportional’ to the “partial pressure of the gas” n the “surface of the liquid” at constant temperature.

• The higher value of $\mathrm{K}_{\mathrm{H}}$  has lower solubility.

• From the given question: At the ‘same temperature’, The hydrogen gas is ‘more soluble’ than helium gas in water.

• Helium gas has higher $\mathrm{K}_{\mathrm{H}}$ value because it is less soluble than hydrogen.