Question

Value of Henry's constant $K_H$ ?

• A. increases with increase in temperature
• B. decreases with increase in temperature
• C. remains constant
• D. first increases then decreases

Answer 1

Answer: (A)

increases with increase in temperature

According to Henry's law, solubility of a gas in a liquid is directly proportional to pressure of gas.

$P\alpha X$

$P=K_{H}X$

$P=$ Partial pressure of gas

$X=$ solubility of gas in liquid

$K_H=$ Henry's constant

$K_H$ depends only on nature of gas, nature of liquid and temperature $\left(T\right)$. As temperature increases, '$K_H$' increases and '$X$' decreases.

So, option (A) is correct.