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Question
Explain the following type of chemical reaction, giving two examples for it:
Displacement reaction
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Solution
A displacement reaction occurs when a more active element displaces a less active element from a compound.
Examples:
- Zinc displaces copper from copper sulphate solution.
\[\ce{Zn + CuSO4_{(aq)} -> ZnSO4_{(aq)} + Cu}\] - Iron pieces when added to copper sulphate solution, copper is displaced.
\[\ce{Fe + CuSO4 → FeSO4 + Cu}\]
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RELATED QUESTIONS
CuSO4(aq) + Zn(s) → ZnSO4(aq) + Cu(s) is an example of a decomposition reaction.
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\[\ce{Magnesium(s) + Hydrochloric acid(aq) -> Magnesium chloride(aq) + Hydrogen(g)}\]
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The chemical change involving iron and hydrochloric acid illustrates a ...............reaction.
Explain the terms with examples.
Displacement reaction
Match the following
Identify the types of reactions.
| REACTION | TYPE |
| NH4OH(aq) + CH3COOH(aq) → CH3COONH4(aq) + H2O(l) | Single Displacement |
| Zn(s) + CuSO4(aq) → ZnSO4(aq) + Cu(s) | Combustion |
| \[\ce{ZnCO3_{(s)} + ->[Heat]ZnO_{(s)} + CO2_{(g)}}\] | Neutralization |
| C2H4(g) + 4O2(g) → 2CO2(g) + 2H2 O(g) + Heat | Thermal decomposition |
Identify the type of chemical reaction given below:
\[\ce{CuSO4 + Fe -> FeSO4 + Cu}\]
Consider the following chemical equation I and II
- \[\ce{Mg + 2HCl -> MgCl_2 +H_2}\]
- \[\ce{NaOH +HCl -> NaCl + H_2O}\]
The correct statement about these equations is:
