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Questions and Answers
In the displacement reaction, the more reactive metal displaces the less reactive metal from its compound. What happens to the displaced metal?
What happens to the color of the copper(II) sulfate solution during the displacement reaction with magnesium?
Which of the following compounds is formed as a result of the displacement reaction between magnesium and copper(II) sulfate?
Which statement is true about the reactivity of magnesium and copper in the given displacement reaction?
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What is the purpose of conducting displacement reactions between metals and aqueous solutions of metal salts?
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Study Notes
Displacement Reactions between Metals and Aqueous Solutions of Metal Salts
- Displacement reactions can be used to compare the reactivity of two metals in a salt solution of one of the metals.
- The more reactive metal displaces the less reactive metal from the solution, causing it to slowly disappear.
- The reaction can be observed as the colour of the solution changes, indicating the formation of a new compound.
Example: Displacement of Copper by Magnesium
- Magnesium is a highly reactive metal that can displace copper from copper(II) sulfate solution.
- The reaction is: Mg + CuSO4 → MgSO4 + Cu
- The blue colour of the CuSO4 solution fades as colourless magnesium sulfate solution is formed.
- Copper coats the surface of the magnesium and also forms solid metal that falls to the bottom of the beaker.
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Description
Test your knowledge on displacement reactions between metals and aqueous solutions of metal salts. Learn how to compare the reactivity of different metals using displacement reactions. Explore examples like magnesium displacing copper from copper(II) sulfate solution.
