Year 11 Chemistry Quiz: Chemical Equilibrium

Instructions: Answer the following questions to the best of your ability. For multiple-choice questions, select the letter corresponding to your answer. Good luck!

Questions

What is chemical equilibrium?
Chemical equilibrium occurs when:
- A. The concentration of reactants is greater than that of products.
- B. The forward and reverse reactions occur at the same rate.
- C. All reactions stop completely.
- D. The reaction only occurs in one direction.
Which of the following statements is true about equilibrium constants (K)?
- A. K varies with changes in temperature.
- B. K is always equal to 1.
- C. K is influenced by changes in concentration only.
- D. K is determined at standard temperature and pressure (STP).
In an exothermic reaction, how does an increase in temperature affect the position of equilibrium?
Explain your answer.
Which of the following changes would shift the equilibrium position to the right in the reaction: N2(g) + 3H2(g) ⇌ 2NH3(g)?
- A. Increase in N2 concentration.
- B. Decrease in pressure.
- C. Increase in temperature.
- D. Increase in NH3 concentration.
What is Le Châtelier’s principle?
Le Châtelier's principle states that when a system at equilibrium is subjected to change in conditions, the equilibrium will:
- A. Shift to counteract the change.
- B. Remain unchanged.
- C. Shift completely to the reactants side.
- D. Shift randomly without any specific direction.

End of Quiz

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What to create	Quiz
Which subject	Chemistry
What age group	Year or Grade 11
What topic	Chemical equilibry
Question types	Mixed
Number of questions	5
Number of answers	4
Correct answers	Exactly 1
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