name the type of reaction and give the coefficients needed to balance the following skeleton reaction: __mg…

name the type of reaction and give the coefficients needed to balance the following skeleton reaction: __mg + __fe₂o₃ → __fe + __mgo\na synthesis with coefficients 3,1,2,3 respectively\nb synthesis with coefficients 3,2,2,3 respectively\nc single replacement with coefficients 3,1,2,3 respectively\nd single replacement with coefficients 1,1,2,3 respectively

name the type of reaction and give the coefficients needed to balance the following skeleton reaction: __mg + __fe₂o₃ → __fe + __mgo\na synthesis with coefficients 3,1,2,3 respectively\nb synthesis with coefficients 3,2,2,3 respectively\nc single replacement with coefficients 3,1,2,3 respectively\nd single replacement with coefficients 1,1,2,3 respectively

Answer

Explanation:

Step1: Identify reaction type

In the reaction $\text{Mg}+\text{Fe}_2\text{O}_3\rightarrow\text{Fe}+\text{MgO}$, magnesium ($\text{Mg}$) replaces iron ($\text{Fe}$) in $\text{Fe}_2\text{O}_3$. This is a single - replacement reaction.

Step2: Balance the reaction

For the oxygen atoms, there are 3 oxygen atoms in $\text{Fe}_2\text{O}_3$. So we need 3 moles of $\text{MgO}$. Then, since we have 3 moles of $\text{MgO}$, we need 3 moles of $\text{Mg}$. And for the iron atoms, since we have 2 iron atoms in $\text{Fe}_2\text{O}_3$, we get 2 moles of $\text{Fe}$. The balanced equation is $3\text{Mg}+\text{Fe}_2\text{O}_3\rightarrow2\text{Fe}+3\text{MgO}$, with coefficients 3, 1, 2, 3 respectively.

Answer:

C. single replacement with coefficients 3,1,2,3 respectively