Practice Concentration of Reactants - 2.1 | Rate of Reactions | IB MYP Class 10 Sciences (Group 4) – Chemistry
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Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What happens to the rate of a reaction when the concentration of reactants increases?

💡 Hint: Think of how more particles interacting affects reactions.

Question 2

Easy

Define concentration in terms of a chemical reaction.

💡 Hint: Focus on how it relates to the number of molecules.

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 main effect of increasing reactant concentration?

  • Decrease reaction rate
  • Increase reaction rate
  • No effect

💡 Hint: Think about collisions.

Question 2

True or false: Higher pressure on gas reactants generally decreases the rate of reaction.

  • True
  • False

💡 Hint: Consider how pressure and volume relate.

Solve and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

A pilot study shows that doubling the concentration of hydrochloric acid in a reaction with zinc increased the rate of hydrogen gas production by 75%. Assuming the relationship remains linear, what would be the expected increase in reaction rate if the concentration is tripled?

💡 Hint: Look at the initial increase to predict the new rate.

Question 2

If a given reaction has an activation energy of 50 kJ/mol and is performed under standard conditions at two different concentrations, discuss how the reaction rate might vary based on your knowledge of concentration and reaction mechanics.

💡 Hint: Consider both concentration and collision theory together to analyze the rate.

Challenge and get performance evaluation