Advertisement Remove all ads

What Do You Mean by a Precipitation Reaction? Explain by Giving Examples. - Science

What do you mean by a precipitation reaction? Explain by giving examples.

Advertisement Remove all ads

Solution 1

A reaction in which an insoluble solid (called precipitate) is formed is called a precipitation reaction.For Example:
Na2CO3 (aq) + CaCl2 (aq) → CaCO3 (s) + 2NaCl (aq)
Sodium Carbonate + Calcium Chloride → Calcium Carbonate + Sodium Chloride
In this reaction, calcium carbonate is obtained as a precipitate. Hence, it is a precipitation reaction.

Solution 2

When two solutions containing soluble salts are combined, a double displacement reaction takes place in which the ions are exchanged between the compounds. When one of such compound formed is in solid form (that is insoluble in aqua) then it settles down at the bottom of the container. This solid is known as the precipitate and the respective reaction is termed as the precipitation reaction. Few examples of precipitation reactions are:

  • CdSO4(aq)+K2S(aq)CdS(s)+K2SO4(aq)
  • 2NaOH(aq)+MgCl2(aq)2NaCl(aq)+Mg(OH)2(s)
  Is there an error in this question or solution?
Advertisement Remove all ads


NCERT Class 10 Science Textbook
Chapter 1 Chemical Reactions and Equations
Q 15 | Page 16
Lakhmir Singh Class 10 Chemistry (Science)
Chapter 1 Chemical Reactions and Equations
Q 33.2 | Page 47
Advertisement Remove all ads
Advertisement Remove all ads

View all notifications

      Forgot password?
View in app×