The reaction between citric acid and water is endothermic.
There are two types of reactions based on whether heat is evolved or absorbed by a reaction. Those two types are:
- Endothermic reaction - in this reaction, heat is absorbed thereby making the reaction vessel to feel cold.
- Exothermic reaction- in this type of reaction, heat is evolved thereby making the reaction vessel to feel warm.
The dissolution of citric acid in water is an endothermic reaction. The water feels cold because heat is absorbed from the surroundings as the reaction proceeds.
For a definition of endothermic and exothermic reactions see
https://brainly.com/question/20877696
