Magnesium nitride, Mg3N, undergoes a thermo decomposition reaction to form magnesium metal and nitrogen gas. a. True b. Fa

Question

Magnesium nitride, Mg3N, undergoes a thermo decomposition reaction to form magnesium metal and nitrogen gas.

a. True
b. False

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Hồng Cúc 5 months 2021-08-16T04:50:05+00:00 1 Answers 3 views 0

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    2021-08-16T04:51:41+00:00

    Answer:

    a. True

    Explanation:

    Magnesium nitride, Mg₃N, is a binary salt. Upon heating, it decomposes into magnesium metal and nitrogen gas. The unbalanced equation is:

    Mg₃N(s) ⇒ Mg(s) + N₂(g)

    We can balance it with the trial and error method. First, we will balance N atoms by multiplying Mg₃N by 2.

    2 Mg₃N(s) ⇒ Mg(s) + N₂(g)

    Then, we get the balanced equation by multiplying Mg by 6.

    2 Mg₃N(s) ⇒ 6 Mg(s) + N₂(g)

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