Which of the given options correctly represents the Parent acid and base of Calcium Carbonate?
| Option | PARENT ACID | PARENT BASE |
| (i) | HCI | NaOH |
| (ii) | `"H"_{2}"CO"_{3}` | Ca(O`"H")_{4}` |
| (iii) | `"H"_{3}"PO"_{3}` | CaS`"O"_{4}` |
| (iv) | CuS`"O"_{4}` | CaS`"O"_{4}` |
| Option | PARENT ACID | PARENT BASE |
| (ii) | `"H"_{2}"CO"_{3}` | Ca(O`"H")_{4}` |
Explanation:
`"H"_{2}"C"O"_{3}` + Ca(O`"H")_{4}` ⟶ CaC`"O"_{3}` + 2`"H"_{2}`O
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