>>12557451>CombustionThere is no general scheme for this, as "combustion" covers a wide variety of reactions. However, in the most common case, the reactants would be a hydrocarbon and oxygen, while the products would be water and carbon dioxide.
>Double DisplacementReactants are two ionic compounds. Products are two ionic compounds with the ionic species swapped. e.g. AX + BY --> AY + BX.
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