Test: Solubility - JEE MCQ

The correct answer is option B
Greater the value of KH, lower is the solubility of gas at same partial pressure. As other gases have greater KH value, so it's less soluble than O2. So O2 is more soluble.

At saturated solution stage equilibrium gets established among dissolution and crystallisation.

The correct answer is Option D.
In a saturated solution, more solute cannot be dissolved at a given temperature.
This is because, the solute dissolves in a solvent because of space between particles of solvent but on continuous addition of solute, the space between the solvent particles gets fulfilled. Thus no more solute particle can dissolve in a solvent.

Henry's law states that at a constant temperature, the solubility of a gas is directly proportional to the pressure of a gas.
In other words, The partial pressure of the gas in vapour phase (p) is proportional to the mole fraction of the gas (x) in the solution.
p = K_Hx
K_H is the henry's law constant.

The correct answer is option A
According to Henry's law, solubility of a gas in a liquid is directly proportional to pressure of gas.
P αX
P=K_H​X​
P= Partial pressure of gas
X= solubility of gas in liquid
KH​= Henry's constant
K_H​ depends only on the nature of gas, nature of liquid and temperature (T). As temperature increases, 'K_H​' increases and 'X' decreases.

The correct answer is option D
Some solute particles in solution collide with the solid solute particles and get separated out of solution. This process is called crystallization. A stage is reached when the two processes take place at the same rate. Under such conditions, the number of solute particles going into solution will be equal to the solute particles separating out and a state of dynamic equilibrium is achieved.

The correct answer is Option A.

Higher the value of Henry’s constant lower is the solubility of gas.

The correct answer is Option D.
The reason for poor solubility of N2 in water is that they just occupy the intermolecular spaces and stay there by interaction with its surrounding molecules by weak van der Waals forces.So it is least soluble while other gases form hydrogen bonds with water.

The correct answer is option D
Henry's law states that at a constant temperature, the solubility of a gas is directly proportional to the pressure of the gas.
In other words, The partial pressure of the gas in vapour phase (p) is proportional to the mole fraction of the gas (x) in the solution.
p=K_H​ x
Here, K_H​ is Henry's law constant.

‘k_H’ is the Henry’s law constant of the gas and its unit is atm.