Question

Give any applications of double displacement reaction

Answer 1

A VERY COMMON APPLICATION OF DOUBLE DISPLACEMENT REACTION IS ACID INDIGESTION.
WE CAN RELIEF FROM IT WHEN STOMACH PRODUCES OF TOO MUCH OF HCL BY DRINKING SODIUM HYDROGEN CARBONATE

HCl+NaHCO3→NaCl+H2CO3

The H in the HCl displaces the Na in NaHCO3 to produce H2CO3