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  • What would you classify the following reaction as <img alt="PbCl_2+Zn\rightarrow ZnCl_2+Pb" src="http://entrancecorner.oncodecogs.com/gif.latex?PbCl_2&plus;Zn%5Crightarrow%20ZnCl_2&am

What would you classify the following reaction as

PbCl_2+Zn\rightarrow ZnCl_2+Pb

Option: 1

Metal displacement reaction


Option: 2

decomposition reaction


Option: 3

non-metal displacement reaction


Option: 4

disproportionation reaction


Answers (1)

best_answer

Displacement Reaction -

In a displacement reaction, an ion (or an atom) in a compound is replaced by an ion (or an atom) of another element. It may be denoted as:

\mathrm{X}+\mathrm{YZ} \rightarrow \mathrm{XZ}+\mathrm{Y}

Displacement reactions fit into two categories: metal displacement and non-metal displacement.

  • Metal Displacement: A metal in a compound can be displaced by another metal in an uncombined state.
     
  • Non-metal displacement: The non-metal displacement redox reactions include hydrogen displacement and a rarely occurring reaction involving oxygen displacement. 

Since Zn replaces Pb from PbCl_2 leaving lead in an elemental state, therefore, it's a metal displacement reaction.
Therefore,option(1) is correct

 

Posted by

Ajit Kumar Dubey

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