Practice Concentration (or Pressure) - 2.1 | Unit 6: Chemical Kinetics | IB Grade 11: Chemistry
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Knowledge

2.1 - Concentration (or Pressure)

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is the unit of concentration in solutions?

💡 Hint: Think about how we measure concentrations in a lab.

Question 2

Easy

True or False: Higher concentrations lead to fewer collisions.

💡 Hint: Consider how change in concentration affects collision frequency.

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 primary effect of increasing the concentration of a reactant in a reaction?

  • Decreases reaction rate
  • Increases reaction rate
  • No effect on reaction rate

💡 Hint: Recall the relationship between collisions and concentration.

Question 2

True or False: Concentration does not affect collision frequency.

  • True
  • False

💡 Hint: Think about how the number of molecules can interact with each other.

Solve 1 more question and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

Consider a reaction with a rate law Rate = k[A]^2[B]. If the concentration of A is tripled and B is held constant, how does the reaction rate change?

💡 Hint: Think about the square relationship in the rate law.

Question 2

If in a gas-phase reaction the partial pressure of A is increased from 1 atm to 4 atm while B remains constant, what is the expected change in reaction rate?

💡 Hint: Consider how pressure mimics concentration in a gas.

Challenge and get performance evaluation