Q46 / 150 · MHT CET 2021 (24 Sep Shift 1) · Chemistry

Regarding to Henry's law which of the following is not correct statement?

  • A
    Different gases have different $K_H$ (Henry's law constant) values at the same temperature
  • B
    The partial pressure of the gas in vapour phase is proportional to the mole fraction of the gas in the solution
  • Correct answer
    C
    Higher the value of $\mathrm{K}_{\mathrm{H}}$ at a given pressure, higher is the solubility of the gas in the liquids
  • D
    The value of $K_H$ increases with increase of temperature and $K_H$ is function of the nature of the gas

Solution

$$ \mathrm{p}=\mathrm{K}_{\mathrm{H}} \times \mathrm{x} $$ Where $K_H=$ Henry law constant Henry's constant increases with increase in temperature while it decreases with increase in solubility. Hence, value of $K_H$ increases as solubility of gas increases is a wrong statement.

Hence, the correct answer is option: 'C'.

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