PART - 1 CH - 1 Chemical Reactions and Equations — Science STD 10 — Question
Gujarat BoardEnglish MediumSTD 10SciencePART - 1 CH - 1 Chemical Reactions and Equations2 Marks
Question
What is meant by displacement reaction? Give examples.
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Answer
Chemical reaction in which more reactive element displaces the less reactive element from its compound (solution) is called displacement reaction. Examples: $\begin{array}{l}(1) Zn ( s )+2 AgNO _3( aq ) \longrightarrow Zn \left( NO _3\right)_2( aq )+2 Ag ( s ) \\ (2) Fe ( s )+ CuSO _4( aq ) \longrightarrow FeSO _4( aq )+ Cu ( s ) \\ (3) Zn ( s )+ CuSO _4( aq ) \longrightarrow ZnSO _4( aq )+ Cu ( s ) \\ (4) Pb ( s )+ CuCl _2( aq ) \longrightarrow PbCl _2( aq )+ Cu ( s )\end{array}$ Here, Zn, Fe and Pb are more reactive than Ag and Cu.
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