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22 July, 06:44

Which of the following correctly represents the decomposition of potassium chlorate to produce potassium chloride and oxygen gas? Which of the following correctly represents the decomposition of potassium chlorate to produce potassium chloride and oxygen gas?

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  1. 22 July, 08:11
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    2KClO3 (s) + heat → 2KCl (s) + 3O2 (g)

    Explanation:

    KClO3 (s) + heat → KCl (s) + O2 (g)

    Adding coefficients so that there are 6 O atoms on both sides.

    2KClO3 (s) + heat → KCl (s) + 3O2 (g)

    Balancing K and Cl atoms, there are 2 of each on the left and 1 of each on the right.

    2KClO3 (s) + heat → 2KCl (s) + 3O2 (g)

    The equation is now balanced.
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