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6 September, 17:52

The space shuttle's solid rocket boosters use ammonium perchlorate and aluminum to create an explosive reaction. The unbalanced reaction can be seen below. NH4ClO4 (s) + Al (s) yields Al2O3 (g) + HCl (g) + N2 (g) + H2O (g) Which of the following statements correctly describes this reaction?

1. Chlorine is being oxidized

2. aluminum is gaining electrons

3. nitrogen is being reduced

4. aluminum is a reducing agent.

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  1. 6 September, 18:23
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    Here we have to choose the statement which correctly describe the reaction NH₄ClO₄ (s) + Al (s) → Al₂O₃ (g) + HCl (g) + N₂ (g) + H₂O (g).

    The correct statement for the reaction:

    NH₄ClO₄ (s) + Al (s) → Al₂O₃ (g) + HCl (g) + N₂ (g) + H₂O (g) is 4. aluminum is reducing agent.

    The reaction between ammonium perchlorate and aluminium metal as given:

    NH₄ClO₄ (s) + Al (s) → Al₂O₃ (g) + HCl (g) + N₂ (g) + H₂O (g)

    In this reaction the change of oxidation state of each element is:

    a) nitrogen (N) from - 3 to 0 thus oxidation. Thus nitrogen is oxidized in this reaction.

    b) chlorine (Cl) from + 7 to - 1 thus reduction. Thus chlorine is reduced in this reaction.

    c) Aluminum (Al) from 0 to + 3 state thus oxidation. Al is loosing electrons; Thus aluminum is being oxidized.

    We know the gaining of electron is a reducing process and the compound itself is an oxidizing agent, whereas the loosing of electrons is a oxidation process and the compound itself is an reducing agent.

    Thus aluminum is a reducing agent in this reaction.
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