you are given the following materials
1. Marble chips
2. Dilute hydrochloric acid
3. Zinc granules
Identify the type of reaction when marble chips and zinc granules are added separately to acid and zinc granules are added separately to acid taken in two tubes . write chemical equations in each case .

Explanation

1. Marble chips chips react with dilute hydrochloric acid to form calcium chloride and carbonic acid . The acid changes to `CO_(2) and H_2O`. It is a double displacement reaction .
`CaCO_(3(s)) +2HCI_((aq)) to CaCl_(2(aq)) + H_(2) CO_(3(aq))(CO_(2) H_(2) O)`