When aqueous solutions of HCI and NaOH are mixed together in a calorimeter, the temperature of the solution increases. What type of reaction is this?
When a reaction occurs in a calorimeter, if the thermometer records an increase in temperature, this means that the reaction is giving heat to the outside. This type of reactions is called Exothermic reaction.
In general acid-base reactions are known to be exothermic reactions.
If the opposite happens, the reaction is called Endothermic reaction.