Practice Calculations Involving Equilibrium Constants - 6.3 | Chapter 6: Equilibrium | IB Grade 12-Chemistry
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6.3 - Calculations Involving Equilibrium Constants

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is the expression for Kc for the reaction 2A + B ⇌ 3C?

💡 Hint: Use the coefficients from the balanced equation.

Question 2

Easy

If Kc for a reaction is 5.0, what does this imply about product concentrations compared to reactant concentrations?

💡 Hint: Recall that K > 1 indicates a shift towards products.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

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

Question 1

What is the purpose of an ICE table?

  • To determine equilibrium constants
  • To organize initial and change amounts for equilibrium
  • To write chemical equations

💡 Hint: Think about what the letters I, C, and E stand for.

Question 2

True or False: The approximation method can always be used when calculating equilibrium concentrations.

  • True
  • False

💡 Hint: Consider when making approximations is reliable in science.

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Challenge Problems

Push your limits with challenges.

Question 1

For the equilibrium reaction 2A ⇌ B + C with Kc = 4.0, if A starts at 0.400 M, find the equilibrium concentrations of A, B, and C.

💡 Hint: Rearranging and solving this quadratic will lead to values for x.

Question 2

A given equilibrium reaction has an equilibrium constant Kc of 0.045. If you start with 0.200 M of each reactant, what are the equilibrium concentrations?

💡 Hint: Remember to consider the ranges of K values affecting directionality.

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