Question

0cm3 of acid were mixed with 60cm3 of alkali in an insulated container. The average temperature of the two solutions before they were mixed was 19.5°C. The temperature after mixing was 27.5°C. Was this an exothermic or an endothermic reaction?

Answer 1

The reaction is endothermic because the temperature of the solution increased after mixing, indicating that heat was absorbed.

Step-by-step explanation:

In this case, the temperature of the solution increased after mixing, indicating that heat was absorbed by the solution. This means the reaction is endothermic. Endothermic reactions are characterized by the absorption of heat from the surroundings, resulting in a decrease in temperature after the reaction takes place.