Practice Approximation Method - 6.3.2.1 | Chapter 6: Equilibrium | IB Grade 12-Chemistry
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6.3.2.1 - Approximation Method

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What does the Approximation Method help simplify in equilibrium calculations?

💡 Hint: Think about what happens when K is much less than 1.

Question 2

Easy

State the 5% rule in relation to the Approximation Method.

💡 Hint: Consider how 'x' relates to initial concentration.

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Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

When is the Approximation Method typically used?

  • When K is large
  • When K is very small
  • Only for gases

💡 Hint: Consider when it is more beneficial to simplify.

Question 2

True or False: The Approximation Method is valid when 'x' is greater than 5% of the initial concentration.

  • True
  • False

💡 Hint: Reflect on the 5% rule.

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Challenge Problems

Push your limits with challenges.

Question 1

Consider the reaction where the equilibrium constant K = 0.002 and the initial concentration of A is 0.050 M. Apply the Approximation Method and verify if the approximation is valid. What are the values at equilibrium?

💡 Hint: Review how K interacts with concentration in a reversible environment.

Question 2

If K = 0.1 and the initial concentration is 0.200 M, analyze if the Approximation Method applies and solve for x accordingly.

💡 Hint: Think carefully about the ratio of x to initial concentration when close to 5%.

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