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Question

The following equation is an example of which type of reaction?

CuSO₄ + 2NaOH → Cu(OH)₂ + Na₂SO₄

The correct answer is

Double displacement reaction

The given chemical equation is:

CuSO4 + 2NaOH → Cu(OH)2 + Na2SO4

This equation represents a double displacement reaction. In this type of reaction, two compounds exchange ions to form two new compounds. Specifically, the sulfate (SO42-) ion from copper sulfate and the hydroxide (OH-) ion from sodium hydroxide exchange to form copper hydroxide and sodium sulfate.

Let's break down the reaction:

  • CuSO4 dissociates into Cu2+ and SO42-.
  • 2NaOH dissociates into 2Na+ and 2OH-.
  • The Cu2+ combines with OH- to form Cu(OH)2.
  • Na+ combines with SO42- to form Na2SO4.

Thus, the equation exemplifies a double displacement reaction.

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Important Questions from Basic Concepts of Chemistry

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  3. Which among the following are essential constituents of Portland cement?

  4. 20 g of common salt is dissolved in 180 g of water. What is the mass percentage of the salt in the solution?

  5. Combination of one volume of nitrogen with three volumes of hydrogen produces

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