Question

The chemical reaction between copper and oxygen can be categorized as: A. Displacement reaction B. Decomposition reaction C. Combination reaction D. Double displacement reaction​

Answer 1

Answer:

A. Combination reaction

Explanation:

When copper combines with oxygen, the process is known as corrosion or oxidation. When copper reacts with oxygen, then it produces copper oxide, a black color compound.

4Cu + O2

⟶

⟶ 2Cu2 O (Combination reaction)

Answer 2

C. Combination reaction is category of chemical reaction between copper and oxygen.

• Chemical reaction between copper and oxygen is combination reaction. The resultant product that forms is copper oxide.
• Chemical reaction of mentioned elements is - 2Cu + O2 --> 2CuO
• Displacement reaction refers to reaction where one type of ion recombines another type of ion. Only one exchange is involved in single displacement reaction while two ions recombine in double displacement reaction.
• Decomposition reaction gives multiple compounds from one reactant.