Wonderful World of Ionization

What is an example of ionization?

Which of the following reactions demonstrate ionization? Choose the correct option from the given choices:

  • C + O2 → CO2
  • H2CO3 → H2O + CO2
  • SO2 + H2O → HSO3– + H+
  • Mg(OH)2 → Mg2+ + 2OH–

Answer

The correct option is Mg(OH)2 → Mg2+ + 2OH–

Ionization is a fascinating process in chemistry where molecules gain or lose electrons to obtain a negative and a positive charge. Let's delve into the explanation of the correct option:

Explanation

Ionization involves the breaking or formation of chemical bonds to create ions. In the reaction Mg(OH)2 → Mg2+ + 2OH–, magnesium hydroxide ionizes into magnesium (2+) ion and hydroxide ion. This reaction exemplifies ionization as the compound dissociates into its constituent ions.

On the other hand, the other options listed do not demonstrate ionization:

  • C + O2 → CO2: This represents a synthesis reaction where elements combine to form a new compound.
  • H2CO3 → H2O + CO2: This showcases a decomposition reaction where the reactant breaks down into smaller products.
  • SO2 + H2O → HSO3– + H+: This reaction does not involve ionization.

Therefore, the correct example of ionization is Mg(OH)2 → Mg2+ + 2OH–, illustrating the transformation of a compound into ions.

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