Question

Please balance the following chemical equations and provide step by step instructions on how to do so.

PbS + PbO ----> Pb + SO₂

Al₂O₃ + HCl ----> AlCl₃ + H₂O

Bi(NO₃)₃ + H₂S ----> Bi₂S₃ + HNO₃

Al₂O₃ + C + Cl₂ ----> AlCl₃ + CO

H₂S + SO₂ ----> H₂O + S

C₃H₈O + O₂ ----> CO₂ + H₂O

Answer 1

1) PbS + 2 PbO ----> 3 Pb + SO₂

2) Al₂O₃ + 6 HCl ----> 2 AlCl₃ + 3 H₂O

3) 2 Bi(NO₃)₃ + 3 H₂S ----> Bi₂S₃ + 3 HNO₃

4) Al₂O₃ + 3 C + 3 Cl₂ ----> 2 AlCl₃ + 3CO

5) 2 H₂S + SO₂ ----> 2 H₂O + 2 S

6) C₃H₈O + 5 O₂ ----> 3 CO₂ + 4 H₂O

explantion :

(1) we have see first reactant side and product side . and count the number of each atom on both side .

(2) atoms are lesser side we have multiply with suitable coefficient

(3) still equation is not balanced again multiply with sutiable number

(4) finally see both side all atoms are whether balanced or not . if not do the same procedure until you get both side same number of each atoms.