Question

Explain displacement and double displacement reactions with suitable examples. (5)​

Answer 1

Answer:

Here's an example reaction between lead(II) nitrate and potassium iodide to form (soluble) potassium nitrate and (insoluble) lead iodide. Formation of a precipitate drives the reaction in a forward direction as the product leaves the solution.

Answer 2

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Displacement Reaction:

Displacement reaction is a chemical reaction in which a more reactive element displaces a less reactive element from its compound. Both metals and non-metals take part in displacement reactions.

Example: Reaction of iron nails with copper sulphate solution.

Double displacement reaction:

double displacement reaction is a type of chemical reaction where two compounds react, and the positive ions (cation) and the negative ions (anion) of the two reactants switch places, forming two new compounds or products.

example... Na2S+2HCl→2NaCl+H2S.