WAEC - Chemistry (2001 - No. 14)

A gas was evolved when a sample of gastric juice reacted with sodium trioxocarbonate (IV) . The gas evolved was
NH3
SO2
HCI
CO2

Explanation

Gastric juice is made up of hydrochloric acid, digestive enzymes, and other substances that help absorb nutrients. However, whenever a carbonate(IV) salt reacts with an acid (HCl), CO\(_2\) is evolved.

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