Which statement is false? Question 10 options: The greater the pressure of a gas
ID: 870529 • Letter: W
Question
Which statement is false?
Question 10 options:
The greater the pressure of a gas over a solution, the greater its solubility.
The vapor pressure of a solvent over a solution increases as its mole fraction increases.
Ionic solutes dissociate in solution causing an enhancement of all colligative properties.
The vapor pressure of a solvent over a solution is less than that of pure solvent.
The solubility of a gas increases as the temperature increases.
please explain
1)The greater the pressure of a gas over a solution, the greater its solubility.
2)The vapor pressure of a solvent over a solution increases as its mole fraction increases.
3)Ionic solutes dissociate in solution causing an enhancement of all colligative properties.
4)The vapor pressure of a solvent over a solution is less than that of pure solvent.
5)The solubility of a gas increases as the temperature increases.
Explanation / Answer
The false statement is:
5) The solubility of a gas increases as the temperature increases.
As the temperature of a solution increases, particles of gas are able to move more freely between liquid phase and gaseous phase (kinetic energy increases) . According to the second law of thermodynamics, the gaseous particles will tend to move to the more entropic phase (gaseous phase), so, the solubility of the gas in the liquid will decrease as the temperature increases.
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