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Chemical Reactions and Equations — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceChemical Reactions and Equations2 Marks
Question
What is the difference between displacement and double displacement reactions? Write equations for these reactions.
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Answer

In a displacement reaction, a more reactive element replaces a less reactive element from a compound.
For Example: CuSo4 (aq) + Zn (s) → ZnS04 (aq) + Cu (s)
In a double displacement reaction, two atoms or a group of atoms switch places to form new compounds.
For Example: Na2S04 (aq) + BaCl2 (aq) → BaS04 (s) + 2NaCI (aq)

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