explain double displacement reaction with an example
Answers
Answer:
Explanation:
A double displacement reaction is a type of chemical reaction where two compounds react, and positive ions (cation) and the negative ions (anion) of the two reactants switch places, forming two new compounds or products. For example, Na2S+2HCl→2NaCl+H2S.
Answer:
displacement reaction is the one wherein the atom or a set of atoms is displaced by another atom in a molecule. For instance, when iron is added to a copper sulphate solution, it displaces the copper metal.
A + B-C → A-C + B
The above equation existswhen A is more reactive than B.
A and B have to be either:
Halogens where C indicates a cation.
Different metals wherein C indicates an anion.
Single Displacement Reaction
A single displacement reaction which is also called as single replacement reaction is a kind of oxidation-reduction chemical reaction when an ion or element moves out of a compound, i.e., one element is replaced by the other in a compound.
When chlorine is added in its gaseous form (or as a gas dissolved in water) to the solution of sodium bromide, the chlorine acquires the place of bromine. Since chlorine is more reactive than bromine, it displaces bromine from sodium bromide, and the solutions turn blue. The brownThe brown colour is the bromine that is displaced. If you notice the equation, you can see that the Cl and Br have swapped their original places.chlorine + sodium bromide → sodium chloride + bromineCl2(aq) + 2NaBr(aq) → 2NaCl(aq) + Br2(aq)