Chemistry
Answer
The rate of dissolution or rate of solubility of a solid in a solvent depends on the following factors:
- Size of solute particles — The smaller the size of the solute particles, the greater is its total surface area exposed to the solvent. Therefore, greater is the solubility of that solute.
- Stirring — This brings more of the solvent in contact with the solute and thus increases the rate of formation of solution.
- Temperature — The solubility of a gas in a liquid always decreases with rise in temperature. But the solubility of most solids in water usually increases with rise in temperature.
Related Questions
Explain the terms
(a) Solution
(b) solute
(c) solvent
Explain why hot saturated solution of potassium nitrate forms crystals as it cools.
(a) If you are given some copper sulphate crystals, how would you proceed to prepare its saturated solution at room temperature?
(b) How can you show that your solution is really saturated?
(a) Define
(i) Henry’s law
(ii) Crystallization
(iii) Seeding
(b) State any three methods of crystallization.