definition of combination reaction
Answers
Answer:
When two or more reactants combine to form a single product,it is combination reaction.Ex-burning of magnesium.
Answer:
combination reaction (also known as a synthesis reaction) is a reaction where two or more elements or compounds (reactants) combine to form a single compound (product). Such reactions may be represented by equations of the following form: X + Y → XY. The combination of two or more elements and form one compound is called combination reaction.
Explanation:
Combination reactions can also occur in other situations when the two products do not have the same ionic charge. In such a situation, different quantities of each reactant must be used. To denote this in a chemical equation, a coefficient is added to one or more of the reactants so that the total ionic charge of each reactant is the same. For example, Iron (III) Oxide is formed by the following equation: {\displaystyle {\ce {4Fe + 3 O2 -> 2Fe2O3}}} {\displaystyle {\ce {4Fe + 3 O2 -> 2Fe2O3}}}. This is because in this case, Iron has a charge of 3+ while each Oxygen atom in {\ce {O2}}} {\ce {O2}}} has a charge of 2-. Oxygen Gas ( {\ {\ce {O2}}} {\ {\ce {O2}}}) must be used instead of elemental oxygen ( {\{{\ce {O}}}} {\ {\ce {O}}}) because elemental oxygen is a free radical that is unstable and combines with other oxygen atoms to form {\{\ce {O2}}} {\ {\ce {O2}}}.