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AP Intermediate 1st Year Equilibrium — practice questions — page 3

Explore 78 free Equilibrium questions in AP Intermediate 1st Year Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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Equilibrium questions and exercises with answers

Showing questions 61–78 of 78.

Equilibrium can be established for chemical reactions and for which processes?Read the answer and worked solution →At dynamic equilibrium, the rates of the forward and reverse reactions are:Read the answer and worked solution →At equilibrium, how do the two opposing processes occur?Read the answer and worked solution →A mixture of reactants and products at equilibrium is called an equilibrium:Read the answer and worked solution →Equilibrium involving ions in aqueous solutions is called:Read the answer and worked solution →A catalyst works by making available a new pathway of what kind?Read the answer and worked solution →Reactions are classified into how many groups by the extent they proceed?Read the answer and worked solution →The temperature at which solid and liquid phases are at equilibrium is the normal:Read the answer and worked solution →The temperature at which liquid and vapour are at equilibrium at one atmosphere is the normal:Read the answer and worked solution →Ice and water show no change in mass because the two transfer rates are:Read the answer and worked solution →Which principle predicts the effect of a change in conditions on an equilibrium?Read the answer and worked solution →What does a catalyst not affect?Read the answer and worked solution →A catalyst lowers the activation energy of forward and reverse reactions by:Read the answer and worked solution →According to Le Chatelier, raising the temperature shifts the ammonia equilibrium:Read the answer and worked solution →Why is a catalyst used in ammonia synthesis despite low temperature favouring yield?Read the answer and worked solution →Which is used as a catalyst to increase the rate of the reaction?Read the answer and worked solution →The relationship among equilibrium concentrations is known as the:Read the answer and worked solution →Which drying agent is placed in the box in the described experiment?Read the answer and worked solution →

Worked practice questions

Equilibrium can be established for chemical reactions and for which processes?

  1. Physical processes
  2. Political processes
  3. Practical processes
  4. Parallel processes
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Correct answer: A. Physical processes

1. Equilibrium is not confined to reactions. 2. Melting and boiling reach it too. 3. Equilibrium can be established for both physical processes and chemical reactions. 4. So the answer is physical processes. _Source: syllabus Chemistry Part I, Unit 6 'Equilibrium'_

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At dynamic equilibrium, the rates of the forward and reverse reactions are:

  1. Elastic
  2. Equal
  3. Erratic
  4. Extreme
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Correct answer: B. Equal

1. Both directions continue to run at equilibrium. 2. Nothing appears to change because they cancel. 3. At dynamic equilibrium the rates of the forward and reverse reactions become equal. 4. So the answer is equal. _Source: syllabus Chemistry Part I, Unit 6 'Equilibrium'_

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At equilibrium, how do the two opposing processes occur?

  1. Simultaneously
  2. Sequentially
  3. Separately
  4. Sporadically
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Correct answer: A. Simultaneously

1. Equilibrium is dynamic rather than static. 2. Neither process ever stops. 3. Both the opposing processes occur simultaneously. 4. So the answer is simultaneously. _Source: syllabus Chemistry Part I, Unit 6 'Equilibrium'_

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