Equilibrium Expressions Worksheet
This worksheet focuses on understanding and writing equilibrium expressions (Kc and Kp) for various chemical reactions at Grade 10 level.
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Equilibrium Expressions Worksheet
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Read each question carefully and provide the best answer. Show all your work for calculations.
1. Which of the following statements is true regarding chemical equilibrium?
The concentrations of reactants and products are equal.
The forward and reverse reaction rates are equal.
The reaction has stopped.
The temperature of the system is constant.
2. For the reaction aA + bB ⇌ cC + dD, what is the equilibrium expression (Kc)?
Kc = [A]a[B]b / [C]c[D]d
Kc = [C]c[D]d / [A]a[B]b
Kc = [C][D] / [A][B]
Kc = [A][B] / [C][D]
3. The equilibrium constant (Kc) is a ratio of the concentrations of products to the concentrations of at equilibrium.
4. In an equilibrium expression, pure solids and pure liquids are .
5. Write the equilibrium expression (Kc) for the following reaction:
N2(g) + 3H2(g) ⇌ 2NH3(g)
6. Write the equilibrium expression (Kp) for the following reaction:
2SO2(g) + O2(g) ⇌ 2SO3(g)
7. A large value of Kc indicates that the products are favored at equilibrium.
True
False