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P-1 Chemical reactions and equations — Science STD 10 — Question

Maharashtra BoardEnglish MediumSTD 10ScienceP-1 Chemical reactions and equations3 Marks
Question
Displacement reaction
✓

Answer

The reaction in which the place of the ion of a less reactive element in a compound is taken by another more reactive element by the formation of its own ions is called displacement reaction.
When zinc granules are added to the blue coloured copper sulphate solution, the zinc ions formed from zinc atoms take the place of $Cu ^{2+}$ ions in $CuSO _4$, and copper atoms, formed from $Cu ^{2+}$ ions comes out i.e. the more reactive zinc displaces the less reactive $Cu$ from copper sulphate.
$
Zn _{( s )}+ CuSO _{4( aq )} \rightarrow ZnSO _{4( aq )}+ Cu _{( s )}+\text { Heat }
$

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