Question

Which equation represents a combustion reaction?


2SO2 + O2 → 2SO3

Pb(NO3)2 + 2HCl → PbCl2 + 2HNO3

2C2H6 + 7O2 → 4CO2 + 6H2O

Ca + 2HCl → CaCl2 + H2

Answer 1

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Answer 2

Answer:

2SO2 + O2 => 2SO3

Explanation:

Combustion reaction involves heating of a compound/element/substance in presences of oxygen.