GENERAL KNOWLEDGE

GK

CHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
In a solid to liquid mixture, an increase in temperature means ____
A
increase in solubility
B
decrease in solubility
C
Either A or B
D
None of the above
Explanation: 

Detailed explanation-1: -An increase in temperature puts a stress on the equilibrium condition and causes it to shift to the right. The stress is relieved because the dissolving process consumes some of the heat. Therefore, the solubility (concentration) increases with an increase in temperature.

Detailed explanation-2: -As the temperature of the solution increase, the average kinetic energy of the solute molecules also increases. This causes the molecules to be less able to hold together and hence they dissolve more readily. Hence increase in temperature increases the solubility of solid states.

Detailed explanation-3: -Temperature–Generally, an increase in the temperature of the solution increases the solubility of a solid solute. For example, a greater amount of sugar will dissolve in warm water than in cold water. A few solid solutes, however, are less soluble in warmer solutions.

Detailed explanation-4: -The solubility increases with temperature for certain solids that are dissolved in liquid water. The rise in higher temperature kinetic energy helps the solvent molecules to break apart the solute molecules that are kept together by intermolecular attractions more effectively.

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