Answer :
-First, let's write the formulas of each compound:
Sodium - Na
Copper (II) Sulfate - CuSO₄
So the reaction equation is:
Na + CuSO₄ --> Cu + Na₂SO₄
Products: Cu (copper) and Na₂SO₄ (sodium sulfate)
Now let's balance the equation. For this, it must have the same number of atoms of each element on the reactants and products side. Just the number of Na is not equal on both sides, so we will put a 2 before Na (2 is the stoichiometric coefficient of Na).
Equation balanced:
2 Na + CuSO₄ --> Cu + Na₂SO₄
The classification of the reaction is single-replacement, because Na trades places with Cu, forming Na₂SO₄.