Question

1 numeric 10 points iron metal reacts with chlorine gas to form iron (ii) chloride. write a balanced equation representing this reaction and report the coefficient of the iron reactant. your answer should be a positive whole number. answer 2 numeric 10 points fluorine gas reacts with aluminum oxide to form aluminum fluoride and oxygen gas. write a balanced reactions and report the coefficient of the aluminum oxide reactant. your answer should be a positive, whole number. answer

Explanation:

Step1: Write un - balanced equation for iron and chlorine reaction

$Fe + Cl_2
ightarrow FeCl_2$

Step2: Check and balance atoms

The number of Fe atoms is 1 on both sides, and the number of Cl atoms is 2 on both sides. The balanced equation is $Fe + Cl_2
ightarrow FeCl_2$. The coefficient of iron reactant is 1.

Step1: Write un - balanced equation for fluorine and aluminum oxide reaction

$F_2+Al_2O_3
ightarrow AlF_3 + O_2$

Step2: Balance oxygen atoms

To balance oxygen, we find the least - common multiple of 3 and 2 (the sub - scripts of oxygen in $Al_2O_3$ and $O_2$). Multiply $Al_2O_3$ by 2 and $O_2$ by 3 to get $F_2 + 2Al_2O_3
ightarrow AlF_3+3O_2$.

Step3: Balance aluminum atoms

Since we have 4 Al atoms on the left - hand side (from $2Al_2O_3$), we multiply $AlF_3$ by 4 to get $F_2+2Al_2O_3
ightarrow 4AlF_3 + 3O_2$.

Step4: Balance fluorine atoms

We have 12 F atoms on the right - hand side (from $4AlF_3$), so we multiply $F_2$ by 6. The balanced equation is $6F_2+2Al_2O_3
ightarrow 4AlF_3 + 3O_2$. The coefficient of aluminum oxide reactant is 2.

Answer:

1