Reactions that go both ways, the energy they transfer each way, and what equilibrium in a closed system means.
What you will learn
- Use the ⇌ symbol and give examples of reversible reactions
- Give the energy change of the reverse reaction
- Describe dynamic equilibrium
Reactions that go both ways
In a reversible reaction the products can react to make the reactants again.
The symbol is ⇌.
A + B ⇌ C + D
- Heat white ammonium chloride: it breaks down into ammonia and hydrogen chloride. Near the cool top of the tube they join up again as a white solid.
- Changing the conditions can change which direction wins.
The rest of this lesson and its 7 practice questions are locked.
In this lesson
- Reactions that go both ways
- Energy both ways
- Dynamic equilibrium
7 practice questions, marked as you go; about 20 minutes in all.
Key terms
Closed system
In this unit: Rates of reaction and equilibrium
Measuring and graphing rates, collision theory and the factors that change a rate, the rates required practical, reversible reactions and how conditions move an equilibrium.