Key Area 2.5 - Enthalpy Flashcards
1
Q
What is an exothermic reaction
A
A reaction in which energy is given out
The reactants have more energy than the product
2
Q
What is an endothermic reaction
A
A reaction in which energy is taken in
The product has more energy than the reactants
3
Q
What is the equation for calculating enthalpy
A
Eh = Cm🔺t
Eh is the energy change
C is the specific heat capacity (4.18)
M is the mass of water heated
🔺t is the change in temperature of water
4
Q
What is enthalpy
A
When a chemical reaction takes place, there is usually a difference in energy between the reactants and products. The difference in energy is known as the enthalpy change
