Endothermic and exothermic reactions

0.0(0)
Studied by 0 people
call kaiCall Kai
learnLearn
examPractice Test
spaced repetitionSpaced Repetition
heart puzzleMatch
flashcardsFlashcards
GameKnowt Play
Card Sorting

1/10

encourage image

There's no tags or description

Looks like no tags are added yet.

11 Terms

1
New cards

Exothermic reaction

When heat energy is transferred to the surroundings

2
New cards

Endothermic reaction

When heat energy is absorbed from the surroundings

3
New cards

Enthalpy change (ΔΗ)

The heat change at constant pressure

4
New cards

Enthalpy change of an exothermic reaction

Negative

5
New cards

Enthalpy change of a endothermic reaction

Positive

6
New cards

Standard conditions (ΔΗ 298)

100kPa and 298 K

7
New cards
8
New cards

What affects the enthalpy change in the reaction

The physical states of reactants as making a liquid into a gas releases less energy as energy is absorbed to make bonds

9
New cards

Enthalpy change formula

Products - reactants

10
New cards

Heat energy change formula

Mass of substance (water) • heat capacity • temperature change

11
New cards

Enthalpy change per mole

-Enthalpy change/ number of moles