Question

why do egg shells dissolve in dilute hydrochloric acid ?

Answer 1

THE COMPONENT OF EGG SHELL IS MADE UP OF CALCIUM CARBONATE WHICH REACTS WITH HYDROCHLORIC ACID TO FORM CARBONDIOXIDE , WATER , CALCIUM CHLORIDE AND HEAT ;-

CaCO₃ + HCL  .........>  CaCL₂ + CO₂ + H₂O + HEAT

HOPE LIKE THIS ANSWER ^_^

Answer 2

Answer: The correct answer is-

Egg shells are composed of calcium carbonate, which dissolves in dilute hydrochloric acid to produce calcium chloride and water, with the release of carbon dioxide gas ( CO2) in the form of effervescence. This is a double displacement reaction in which exchange of ions takes place.

As calcium is more reactive than hydrogen, it will displace hydrogen from hydrochloric acid, forming calcium chloride, water, and releasing carbon dioxide gas.

CaCO₃ (s) + 2HCl (aq) → CaCl₂ ( s) + H₂O (aq) + CO₂ (g)