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

Question

Chemistry

Lawson Morton

27 April, 15:25

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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Answers (1)

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Owen Jones · Answer 1

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