Question

5.
The increase in the temperature of the aqueous solution placed in a closed vessel will result in its
(1) Molarity to increase
(2) Molarity to decrease
(3) Mole fraction to increase
(4) Mass % to increase
with reason ❤️❤️❤️❤️​

Answer 1

The increase in the temperature of the aqueous solution placed in a closed vessel will result in its molarity to decrease.

Explanation:

• Molarity is defined as the number of moles of present in liter of a solution.

Mathematically,    Molarity = $\frac{\text{no. of moles}}{\text{volume in liter}}$

• When we increase the temperature of a solution then there will occur more number of collisions between the molecules of the solution. Due to this they will occupy more space of the vessel.

• Hence, there will occur an increase in the volume of solution. Since, volume is inversely proportional to molarity of a solution. As a result, with increase in volume of the solution there will occur a decrease in molarity of the solution.

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Answer 2

Explanation:

hence option (2) molarity decreases.