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SAAT (English)

Chemistry: sample 6

These questions are ETEC/Qiyas's own officially published trial-exam questions, shown here with attribution. They are not sold and are not part of Smart Advanced Network for Education, Development & Achievement's original question bank.
Directions

Read the following questions. Choose the right answer.

There is only ONE correct answer to each question.

Which of the following statements is true of a reaction at equilibrium?

  1. The rate of the forward reaction is greater than that of the reverse reaction.
  2. The rate of the reverse reaction is greater than that of the forward reaction.
  3. The rates of forward and reverse reactions are equal.
  4. The rates of forward and reverse reactions are equal to zero.
Show answer

Correct answer: C. The rates of forward and reverse reactions are equal.

Why

At dynamic equilibrium, the forward and reverse reaction rates are equal (though not zero), so concentrations stay constant.

Source: The Standardized Academic Achievement Test (SAAT) for the Science Track Trial Test (ETEC official) Open the official document

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