Question

You are given the following reaction:

\(CuO + {H_2}\mathop \to \limits^{Heat} Cu + {H_2}O\)

The reaction represents:

1. Combination reaction as well as double displacement reaction
2. Redox reaction as well as displacement reaction
3. Double displacement reaction as well as redox reaction
4. Decomposition reaction as well as displacement reaction

Answer 1

Correct Answer - Option 2 : Redox reaction as well as displacement reaction

The correct answer is the Redox reaction as well as displacement reaction.

• A redox reaction can be defined as a chemical reaction in which electrons are transferred between two reactants participating in it. This transfer of electrons can be identified by observing the changes in the oxidation states of the reacting species.

• Combination Reaction
  • A reaction in which two or more reactants combine to form a single product is known as a combination reaction.
  • It takes the form of X + Y → XY
  • A combination reaction is also known as a synthesis reaction.
• Decomposition Reaction
  • A reaction in which a single compound breaks into two or simpler compounds is known as a decomposition reaction.
  • It takes the form of XY → X + Y
  • A decomposition reaction is just the opposite of a combination reaction.
  • The reaction in which a compound decomposes due to heating is known as a thermal decomposition reaction.
• Displacement Reaction
  • A chemical reaction in which a more reactive element displaces a less reactive element from its aqueous salt solution.
  • It takes the form X + YZ → XZ + Y
  • It is also called a substitution reaction
• Double Displacement Reaction
  • A chemical reaction in which ions get exchanged between two reactants that form a new compound is called a double displacement reaction.
  • It takes the form of XY + ZA → XZ + YA
  • It is also called a metathesis reaction
• Precipitation Reaction
  • A chemical reaction that involves the formation of an insoluble product (precipitate; solid) is called a Precipitation reaction.
  • The reactants are soluble, but the product formed would be insoluble and separates out as a solid.