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Compound combustion equation balancing
Compound A has the formula C₄H₆O₂. Compound A is flammable.
Write a balanced equation for the complete combustion of compound A.
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Marking points
- 1 Places C₄H₆O₂ and O₂ as the two reactants.
- 2 Places CO₂ and H₂O as the two products.
- 3 Uses a correct balanced coefficient ratio equivalent to 2:9:8:6.
Why this answer loses marks
The products are chosen correctly, but the oxygen coefficient is guessed.
Every element must have equal atom totals on both sides, so all coefficients need systematic balancing.