When copper sulfate (CuSO₄) is added to sodium hydroxide (NaOH), the following reaction occurs:

CuSO₄ (aq) + 2NaOH (aq) → Cu(OH)₂ (s) + Na₂SO₄ (aq)

This reaction produces:

* Copper(II) hydroxide (Cu(OH)₂): This is a light blue, gelatinous precipitate that forms.

* Sodium sulfate (Na₂SO₄): This remains dissolved in the solution and is colorless.

Therefore, the resulting solution will have a light blue color due to the formation of copper(II) hydroxide precipitate.