Assertion: chemical reaction's δh | /r/HasProperty | negative
Facets:
value: for exothermic reactions
type: PURPOSE
Source sentences:
text: Reactions can be exothermic, where ΔH is negative and energy is released.
text: You may have noticed that the ΔH for a chemical reaction may be positive or negative.
text: You may have noticed that the ΔH for a chemical reaction may be positive or negative.
text: , while a chemical reaction that has a negative ΔH is said to be exothermicA chemical reaction that has a negative change in enthalpy..
text: By definition, a chemical reaction that has a negative ΔH is exothermic, meaning that this much energy—in this case, 565 kJ—is given off by the reaction.
text: Thus, for exothermic reactions (ΔH is negative), K decreases with an increase in temperature, but, for endothermic reactions, (ΔH is positive)
text: You may have noticed that the ΔH for a chemical reaction may be positive or negative.
text: A chemical reaction that has a positive ΔH is said to be endothermic, while a chemical reaction that has a negative ΔH is said to be exothermic.
text: By definition, a chemical reaction that has a negative ΔH is exothermic, meaning that this much energy—in this case, 565 kJ—is given off by the reaction.
text: A chemical reaction that has a positive ΔH is said to be endothermicA chemical reaction that has a positive change in enthalpy.
text: What does it mean if the ΔH of a process is positive?
text: Thus, for exothermic reactions (ΔH is negative), K decreases with an increase in temperature, but, for endothermic reactions, (ΔH is positive)
text: You may have noticed that the ΔH for a chemical reaction may be positive or negative.
text: A chemical reaction that has a positive ΔH is said to be endothermic, while a chemical reaction that has a negative ΔH is said to be exothermic.
text: What does it mean if the ΔH of a process is positive?