The equation CuSO4 + Na2S2O4 -> CuS2O4 + Na2SO4

1. Detailed information about the reaction CuSO₄ + Na₂S₂O₄ -> CuS₂O₄ + Na₂SO₄:

The above chemical equation shows the reaction between copper(II) sulfate (CuSO₄) and sodium thiosulfate (Na₂S₂O₄) to form CuS₂O₄ (a compound that does not exist in chemistry) and sodium sulfate (Na₂SO₄).

2. Reaction conditions: The reaction usually occurs in a mildly acidic environment and at room temperature.

3. Reaction process: Specifically, CuSO₄ (copper sulfate) reacts with Na₂S₂O₄ (sodium thiosulfate) to form a non-existent compound and Na₂SO₄ (sodium sulfate).

4. Phenomena occurring: In fact, this equation is not accurate. The reaction between CuSO₄ and Na₂S₂O₄ will yield Cu₂S (copper sulfide) and Na₂SO₄:

CuSO₄ + Na₂S₂O₃ -> Cu₂S + Na₂SO₄

In this reaction, you would see the mixture change from the blue color of CuSO₄ to the black color of Cu₂S.