Question

Which of the given options correctly represents the Parent acid and base of Calcium Carbonate? option | parent acid | parent base
A. HCL NaOH
B. H2CO3 Ca(OH) 2
C H3PO3 CaSO4
D H2SO4 CaSO

Answer 1

Answer:

B. H2CO3 Ca(OH) 2

Explanation:

Answer 2

B. H2CO3 Ca(OH)2 correctly represents the Parent acid and base of Calcium Carbonate.

1. Calcium carbonate also known as limestone has chemical formula CaCO3.
2. As per the given options, only option B shows presence of carbonate ions. Hence, it is correct answer.
3. Reaction for formation of calcium carbonate is -

H2CO3 + Ca(OH)2 --> CaCO3 + 2H2O

4. As we know, reaction of acid and base yields salt and water, therefore, in given reaction calcium carbonate is salt and water is represented by H2O.