Redox and Equivalent ConceptHard
Question
An oxide of iron contains 30% oxygen by mass. The oxidation state of iron in this oxide is (Fe =56)
Options
A.+1
B.+2
C.+3
D.+4
Solution
$\frac{N_{Fe}}{N_{O}} = \frac{70/56}{30/16} = \frac{2}{3} \Rightarrow \text{Formula = F}\text{e}_{2}O_{3}$
∴ Oxidation state of Fe = +3.
Create a free account to view solution
View Solution FreeMore Redox and Equivalent Concept Questions
To 1 L of 1.0 M impure H2SO4 sample, 1.0 M NaOH solution was added and a plot was obtained as follows: The % purity of H...H2O2 disproportionates into H2O and O2. The equivalent weight of H2O2 in this reaction is...The vapour density of a volatile chloride of a metal is 74.6. If the specific heat of the metal is 0.55, then the atomic...For the process, $NO_{3}^{-} \rightarrow N_{2}O$, the number of H2O molecules needed for balancing in acid medium and th...Aqueous HCl reacts with ${MnO}_{2}(\text{ }s)$ to form ${MnCl}_{2}(aq)$, ${Cl}_{2}(\text{ }g)$ and $H_{2}O(l)$. What is ...