Question

solid copper is formed as a result of an oxidation - reduction reaction. what is a characteristic of this type of reaction? the formation of steam and carbon dioxide gas the formation of water and an ionic salt a transfer of electrons between two reacting species the formation of a solid precipitate.

Explanation:

Oxidation - reduction reactions involve the transfer of electrons between reacting species. For example, in a simple redox reaction like \( \text{Zn}+\text{CuSO}_4=\text{ZnSO}_4 +\text{Cu}\), zinc loses electrons (is oxidized) and copper ions gain electrons (are reduced). The formation of a solid precipitate is a characteristic of precipitation reactions (not redox). The formation of water and an ionic salt is a neutralization reaction (acid - base reaction). The formation of steam and carbon dioxide gas is a decomposition or combustion reaction (not redox in all cases).

Answer:

A transfer of electrons between two reacting species.