Which is an example of dissociation?
a. c + o2 co2
b. nh3 + h2o nh4+ + oh–
c. so2 + h2o hso3– + h+
d. ca3(po4)2 3ca2+ + 2po43–

Option (D) is the correct answer.

Explanation:

A dissociation reaction is a reaction in which in which a compound splits or dissociates into its ions.

For example,

Whereas when two elements combine together and results in the formation of a single compound then it is known as synthesis reaction.

For example,  

On the other hand, when is dissolved in water then it gives ammonium and hydroxide ions.

Thus, we can conclude that out of the given options is an example of dissociation.

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