Question

Why precipitation is done in hot and dilute solution?

Answer 1

due to double displacement reaction of reactants.precipitation occurs.

Answer 2

Precipitation is done in hot and dilutes solution due to the following reasons:

• Increasing the temperature of a solution increases the solubility of the ionic compounds in the solution.
• Due to this the probability of the formation of precipitates increases.
• The molar solubility of the precipitates increases with the increase in temperature which results in the decrease of supersaturation hence increasing the particle size, so we use a hot solution for precipitation.
• The dilute solution keeps the molar concentration of the mixed reagent low and helps in uniform stirring.
• Hence, we use hot and dilute solutions for precipitation.