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Precipitate formation

Explanation:

Chemical change:

The changes, that occur due to change in the composition of a substance and result in a different compound is known as chemical change.

These changes are irreversible

These changes occur due to chemical reactions

Chemical reaction:

Cl₂(g) + 2NaBr(aq)     →   2NaCl(s)  + Br₂(g)

when chlorine react with sodium bromide, sodium chloride and bromine gas is formed. The formation of solid sodium chloride is actually indication of chemical change because precipitates are formed during chemical reaction.

The given reaction is single displacement reaction.

Single replacement:

It is the reaction in which one elements replace the other element in compound.

AB + C → AC + B

the potential energy of the reactants is 200j.

from the energy diagram, the energy of the product formed is 350j; this means that, this reaction is an endothermic reaction, because it absorbs energy from its environment.

a polar bond is formed when electrons are shared unevenly between atoms