Question

question 3 (1 point)
fe₂(so₄)₃ is called:
iron sulfate
iron(ll) sulfate
iron(iii) sulfate
diiron trisulfate
iron trisulfate

Explanation:

The sulfate ion ($\text{SO}_4^{2-}$) has a charge of -2. In $\text{Fe}_2(\text{SO}_4)_3$, there are 3 sulfate ions, so the total negative charge is $3\times(- 2)=-6$. Since the compound is neutral, the total positive charge from iron ions must be +6. There are 2 iron ions, so each iron ion has a charge of $+6\div2 = +3$. Iron with a +3 charge is named iron(III). The sulfate part is sulfate. So the name is iron(III) sulfate.

Answer:

iron(III) sulfate