Identify the major ionic species present in an aqueous solution of sodium sulfate.

The major ionic species present in the solution are sodium and sulfate ions.

Explanation:

Sodium sulfate is an ionic compound because it is formed by the complete transfer of electrons from sodium ions to sulfate ions.

When an ionic compound is dissolved in water, it dissociates into its corresponding ions.

The chemical equation for the ionization of sodium sulfate follows:

By Stoichiometry of the reaction:

1 mole of aqueous solution of sodium sulfate produces 2 moles of sodium ions and 1 mole of sulfate ions.

Hence, the major ionic species present in the solution are sodium and sulfate ions.

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metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

if it's not useful, feel free to report for mistake in answer.