what is the difference between displacement and double displacement reaction?

Asked by Deepshikha deepak | 2nd Apr, 2013, 04:44: PM

Expert Answer:

The reactions in which one element takes the place of another element in a compound, are called displacement reactions. For ex: When a strip of zinc metal is placed in iron sulphate solution, then zinc sulphate solution and iron are produced. Here displacement of iron by zinc takes place.
 
whereas, the reactions in whihc two compounds react by an exchange of ions to form two new compounds are called double displacement reactions. For ex: when barium chloride solution is added to soldium sulphate, then a white ppt. of barium sulphate is formed along with sodium chloride solution. Here displacement of Barium ions of barium chloride by sodium ions takes place and hence two new products i.e. barium sulphate and sodium chloride are formed.

Answered by  | 3rd Apr, 2013, 10:21: AM

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