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07-11-2017
Chemistry

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When potassium bromate (kbro3 ) is heated, it decomposes into potassium bromide and a gas that supports the combustion of a glowing splint?

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barnuts barnuts

20-11-2017

We know that the oxygen (O2) causes a glowing splint to reignite, however, let us check what is missing on the products side of the chemical equation:
KBrO3 → KBr + ?
As we see, oxygen (O2) is the element missing from the other side. Therefore the balanced chemical equation for this decomposition is as follows:
2KBrO3 → 2KBr + 3O2

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