How to balance the chemical equation of al(s)+cuo(s)> al2o3(s)+cu(s)

2Al + 3CuO ⟶ Al₂O₃ + 3Cu

Explanation:

Al + CuO ⟶ Al₂O₃ + Cu

1. Put a 1 in front of the most complicated-looking formula (Al₂O₃):

Al + CuO ⟶ 1Al₂O₃ + Cu

2. Balance Al:

We have fixed 2 Al on the right. We need 2 Al on the left. Put a 2 in front of Al.

2Al + CuO ⟶ 1Al₂O₃ + Cu

3. Balance O:

We have fixed 3 O on the right. We need 3 O on the left. Put a 3 in front of CuO.

2Al + 3CuO ⟶ 1Al₂O₃ + Cu

4. Balance Cu:

We have fixed 3 Cu on the right. We need 3 Cu on the right. Put a 3 in front of Cu.

2Al + 3CuO ⟶ 1Al₂O₃ + 3Cu

Every formula now has a coefficient. The equation should be balanced.

5. Check that atoms balance:

Atom  On the left  On the right

 Al              2                   2

 Cu             3                   3

 O              3                    3

The balanced equation is

2Al + 3CuO ⟶ Al₂O₃ + 3Cu

hope this

explanation:

covalent bonds

consist of pairs of electrons shared by two atoms, and bind the atoms to fixed orientation and requre high energies to break them

ionic bonds

when two atoms differ considerably in their electronegativity, then one of the atoms will lose its electron to the other atom. this results in a positively charged ion(cation) and a negatively charged ion (anion)