Answer:
The ballon would be inflated. The reason is that the sodium bicarbonate in baking soda reacts with acetic acid in vinegar to produce gas.
Explanation:
The main component of baking soda is sodium bicarbonate, [tex]{\rm Na_{2}CO_{3}}[/tex].
Vinegar is mostly a solution of acetic acid [tex]{\rm CH_{3}COOH}[/tex] in water.
Acids such as acetic acid react with carbonate salts. One of the products of such reactions is carbon dioxide [tex]{\rm CO_{2}}[/tex], a gas.
In this question, when the acetic acid in vinegar reacts with sodium bicarbonate in the baking soda, the following reaction would occur:
[tex]\begin{aligned}& {\rm Na_{2}CO_{3}}\, (aq) + 2\, {\rm CH_{3}COOH}\, (aq) \\ &\to 2\, {\rm CH_{3}COONa}\, (aq) + {\rm CO_{2}}\, (g)\end{aligned}[/tex].
The [tex]{\rm CO_{2}}[/tex] produced would then inflate the ballon placed on the opening of the bottle.
