The balanced equation is 2K(s) + Cl2(g)→2KCl(s)
- There are two chlorine atoms on the left-hand side (LHS) and one chlorine atom on the right-hand side (RHS). Add a coefficient of 2 in front of KCl.
K(s) + Cl2(g)→2KCl
- K is not balanced. There are two K atoms on the RHS, and only one on the LHS. Place a coefficient of 2 in front of K on the LHS.
2K(s) + Cl2(g)→2KCl(s)
- Now 2 K atoms on both sides and two chlorine atoms on both sides. Hence balanced.