Question

Can a chemical change be both exothermic and endothermic? Explain

Answer 1

Answer:

A chemical reaction cannot be both exothermic and endothermic. The heat released or absorbed in a reaction is equal to the difference in total heat content (enthalpy) of the reactants and products. ... So, a reaction cannot be both endothermic and exothermic at the same time.

Explanation:

All chemical processes are accompanied by energy changes. When a reaction proceeds, it either releases energy to, or absorbs energy from, its surroundings. In thermodynamics, these two types of reactions are classified as exothermic or endothermic, respectively.

Answer 2

Answer:

yes, for ex- .when Nitrogen reacts with air to form nitrogen oxide is absorbs heat,thus endothermic

.When zinc reacts with hydrochloride acid it produces a lot of heat,thus exothermic.........

so chemical reaction can be both