Question

estion 11 (3 points)
listen

the above image shows the aftermath of solid baking soda being poured into liquid vinegar. how do you know a chemical reaction has taken place in this example?

Explanation:

When baking soda (sodium bicarbonate, \(NaHCO_3\)) reacts with vinegar (acetic acid, \(CH_3COOH\)), a chemical reaction occurs. One of the key indicators of a chemical reaction is the formation of a gas. In this case, carbon dioxide (\(CO_2\)) gas is produced. The bubbling and fizzing seen in the image is evidence of gas evolution, which is a sign that new substances (in this case, carbon dioxide along with water and a salt - sodium acetate \(CH_3COONa\)) are formed.

Answer:

A chemical reaction has taken place because a gas (carbon dioxide) is formed, which is indicated by the bubbling and fizzing in the mixture.