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30 January, 11:14

Examine the equation of a reversible reaction.

2SO2 + O2 ⇌ 2SO3

Which of the answer choices correctly lists the reverse reaction?

2SO2 + 2SO3 → O2

2SO3 + 2SO2 → O2

2SO3 + O2 → 2SO2

2SO2 + O2 → 2SO3

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Answers (2)
  1. 30 January, 11:23
    0
    The correct answer for the reverse reaction is the third option starting from top.

    Explanation:

    If we examine the given chemical equation:

    2SO2 + O2 ⇌ 2SO3

    The double arrow indicates that the reaction goes in both directions:

    2SO2 + O2 - > 2SO3

    2SO3 - > 2SO2 + O2

    However, the closest option for the real situation would be the product from the semirreaction reacting in turn with oxygen:

    2SO3 + O2 - > 2SO2

    Thus, the correct answer is the third.
  2. 30 January, 11:43
    0
    2SO3 - > 2SO2 + O2 (not shown in the options)

    Explanation:

    In a reversible reaction, reactants react to produce products and products react to produce reactants, simultaneously.

    Given the reversible reaction:

    2SO2 + O2 ⇌ 2SO3

    It has a forward reaction:

    2SO2 + O2 - > 2SO3

    and a reverse reaction:

    2SO2 + O2 < - 2SO3
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