Answer: The coefficient we should change first is for [tex]NO_{3}[/tex].
Explanation:
The given reaction equation is as follows.
[tex]Al + Ni(NO_{3})_{2} \rightarrow Al(NO_{3})_{3} + Ni[/tex]
Here, number of atoms present on reactant side are as follows.
- Al = 1
- Ni = 1
- [tex]NO_{3}[/tex] = 2
Number of atoms present on the product side are as follows.
- Al = 1
- Ni = 1
- [tex]NO_{3}[/tex] = 3
To balance this equation, multiply Al by 2 and [tex]NO_{3}[/tex] by 3 on reactant side. Also, multiply [tex]Al(NO_{3})_{3}[/tex] by 2 and Ni by 3 on the product side.
Hence, the equation can be rewritten as follows.
[tex]2Al + 3Ni(NO_{3})_{2} \rightarrow 2Al(NO_{3})_{3} + 3Ni[/tex]
Now, number of atoms present on reactant side are as follows.
- Al = 2
- Ni = 3
- [tex]NO_{3}[/tex] = 6
Number of atoms present on product side are as follows.
- Al = 2
- Ni = 3
- [tex]NO_{3}[/tex] = 6
Since, the atoms on both reactant and product side are same. Hence, it is now a balanced chemical equation.
Thus, we can conclude that the coefficient we should change first is for [tex]NO_{3}[/tex].
