balance the following chemical equations: al₂o₃ + hcl → alcl₃ + 3h₂o
balance the following chemical equations: al₂o₃ + hcl → alcl₃ + 3h₂o
Answer
Explanation:
Step1: Balance aluminum atoms
On the left - hand side, there are 2 aluminum atoms in $Al_2O_3$. On the right - hand side, there is 1 aluminum atom in $AlCl_3$. To balance aluminum, we put a 2 in front of $AlCl_3$: $Al_2O_3+HCl\rightarrow2AlCl_3 + 3H_2O$.
Step2: Balance chlorine atoms
After putting 2 in front of $AlCl_3$, there are 6 chlorine atoms on the right - hand side. So we put 6 in front of $HCl$ on the left - hand side: $Al_2O_3 + 6HCl\rightarrow2AlCl_3+3H_2O$.
Step3: Check oxygen and hydrogen atoms
On the left - hand side, there are 3 oxygen atoms in $Al_2O_3$ and 6 hydrogen atoms in 6$HCl$. On the right - hand side, there are 3 oxygen atoms in $3H_2O$ and 6 hydrogen atoms in $3H_2O$. The equation is balanced.
Answer:
6, 2