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Vlad [161]
3 years ago
9

ΔH is always positive for a ...........

Chemistry
1 answer:
scoray [572]3 years ago
8 0

Answer:

a. endothermic reaction

Explanation:

In an endothermic reaction, heat is absorbed from the environment. This leaves the surrounding at a colder temperature compared to the system.

ΔH, the change in enthalpy is assigned a positive sign because the heat energy level of the final state is higher than that of the initial state.

Some examples are mostly dissolution substances in water.

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