Question

You are given the following chemical reaction:

   CuO + H2 with heat = Cu + H2O

 This reaction represents:

 a. Combination reaction as well as double displacement reaction
 b. Redox reaction as well as displacement reaction
 c. Double displacement reaction as well as redox reaction
 d. Decomposition reaction as well as displacement reaction
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Answer 1

The answer is Redox reaction as well as displacement reaction because both reduction and oxidation takes place. And O2 gets displaced from Cu to H2. Hope it helps!!!

Answer 2

Answer:

CuO + H2 with heat = Cu + H2O

This reaction represents,

b. Redox reaction as well as displacement reaction

Explanation:

Reaction: CuO + H2 with heat = Cu + H2O

Case 1 :

• In this reaction when CuO is heated with H2, displacement of O occurs and binds with H2 and forms H2O because copper has lower reactivity with oxygen.
• So, It is called Displacement reaction.

Case 2:

• Also oxidation states of reacting substances are changing by transferring of electrons.
• Oxidation number of Cu is changed from +2 to 0 in CuO and oxidation number of O2 is changed from 0 to +1 in H2O.
• So, it is called Redox reaction also.

Hence, it is proved that the above reaction represents a redox reaction as well as a displacement reaction.

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