IBDP Chemistry: Chemical Equilibrium

In this chapter of IBDP Chemistry, we will learn about Chemical Equilibrium.

• Scientists working in environmental monitoring, medicine and forensic science all need to analyse substances
• The results of their analysis are often matched against existing databases to identify substances (or suspects in the case of forensics)

• In this chapter of IBDP Chemistry,  In a reversible reaction the products of the reaction can react to re-form the original reactants.
• In a closed system, equilibrium is achieved when the rates of the forward and reverse reactions are equal.
• Changing the reaction conditions can change the amounts of products and reactants in a mixture at equilibrium
  • For example, for the reaction: ICl + Cl₂ --> ICl₃
    • If chlorine is added, the concentration of chlorine is increased and more ICl₃ is produced
    • If chlorine is removed, the concentration of chlorine is decreased and more ICl is produced

1. In this chapter of IBDP Chemistry, If the forward reaction produces more molecules of gas….

…an increase in pressure decreases the amount of products formed.

…a decrease in pressure increases the amount of products formed.

2. If the forward reaction produces less molecules of gas…

…an increase in pressure increases the amount of products formed.

…a decrease in pressure decreases the amount of products formed.

3. If the forward reaction is exothermic…

…an increase in temperature decreases the amount of products formed.

…a decrease in temperature increases the amount of products formed.

4. In this chapter of IBDP Chemistry, If the forward reaction is endothermic…

…an increase in temperature increases the amount of products formed.

…a decrease in temperature decreases the amount of products formed.

This is the end of this topic.

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