Answer:
This question is incomplete
Explanation:
The first answer is definitely exothermic reaction. An exothermic reaction is a reaction in which heat is released to the surroundings (hence the reason for the beaker been hot). Examples of exothermic reaction include combustion, neutralization reaction and rusting. In the examples given, heat is usually given off.
According to the question, two liquids were mixed; this suggests that the reaction is in fact a neutralization reaction. A neutralization reaction is the reaction between an acid and a base to produce salt and water. Since the acid and the base in neutralization reaction are mostly in liquid form, hence the reason for the answer.
Combustion is the burning of a substance (solid) in excess oxygen (gas) to produce carbon dioxide and water. This shows the situation depicted in the question is not a combustion reaction.
