Explain why it is important to warm up the solution after dissolving the antacid tablet?

Because the reaction is endothermic, and because of that, it is necessary to warm up the solution, to achieve more dissolution

Explanation:

The chemical reactions can be exothermic or endothermic. In the first one, the system loses heat for the surroundings, so the temperature of the surroundings is increasing, and the system is decreasing.

In the endothermic reactions, the system is absorbing heat for the surroundings, so its temperature is increasing, and the temperature of the surroundings is decreasing.

Note that the flow heat only occurs when there is a difference in temperature because the system and the surroundings intend to the thermal equilibrium. So, for exothermic reactions, to control them and let them achieve the maximum conversion, is ideal to cool down the solution, so the reaction will lose more heat; and for endothermic reactions, it is ideal to warm up the solution, so the reaction can absorb more heat.

So, the reaction of the dissolve of the antiacid tablet is endothermic, and because of that, it is necessary to warm up the solution, to achieve more dissolution.

3 hours because it is a decent distance.