Question 4 the compound sodium sulfate is soluble in water. when this compound dissolves in water, which ion listed below would be present in solution? s2- na22+ o2- so42- none of the above

Answer is: SO₄²⁻ would be present in solution.
Balanced chemical reaction (dissociation):
Na₂SO₄(aq) → 2Na⁺(aq) + SO₄²⁻(aq).
The compound sodium sulfate dissociates in water on sodium cations (there are two sodium atoms in one molecule of sodium sulfate), charge charge of +1 and sulfate ion, charge -2.

Change in speed or direction : )