Question

HCN + _ CuSO4 → _ H2SO4 + __Cu(CN)2

Answer 1

Hey there!

HCN + CuSO₄ → H₂SO₄ + Cu(CN)₂

Balance CN.

1 on the left, 2 on the right. Add a coefficient of 2 in front of HCN.

2HCN + CuSO₄ → H₂SO₄ + Cu(CN)₂

Balance H.

2 on the left, 2 on the right. Already balanced.

Balance SO₄.

1 on the left, 1 on the right. Already balanced.

Balance Cu.

1 on the left, 1 on the right. Already balanced.

Our final balanced equation:

2HCN + CuSO₄ → H₂SO₄ + Cu(CN)₂

Hope this helps!