Embibe Experts Solutions for Chapter: Redox Reactions, Exercise 2: Level 2

The resonating structures of the cyanate ion are . The correct set of the oxidisation states of $\mathrm{O}, \mathrm{C} \& \mathrm{N}$, respectively, with the most stable structure out of the above is:

${\mathrm{CN}}^{-}$ is oxidised by ${\mathrm{NO}}_3^{-}$ in the presence of an acid : ${\mathrm{aCN}}^{-}+{\mathrm{bNO}}_3^{-}+{\mathrm{cH}}^{+}⟶\left(\mathrm{a}+\mathrm{b}\right)\mathrm{NO}+{\mathrm{aCO}}_2+\frac{\mathrm{c}}{2}{\mathrm{H}}_2\mathrm{O}$. What are the whole number values of $\mathrm{a}, \mathrm{b}, \mathrm{c}$ in that order?

In the following reaction: $\mathrm{Cr}(\mathrm{OH}{)}_3+{\mathrm{OH}}^{-}+{\mathrm{IO}}_3^{-}\to {\mathrm{CrO}}_4^{2-}+{\mathrm{H}}_2\mathrm{O}+{\mathrm{I}}^{-}$

Which of the following does not act both as an oxidising as well as reducing agent

If equal volumes of $0.1 \mathrm{M} {\mathrm{KMnO}}_4$ and $0.1 \mathrm{M} {\mathrm{K}}_2{\mathrm{Cr}}_2{\mathrm{O}}_7$ solutions are allowed to oxidise ${\mathrm{Fe}}^{2+}$ to ${\mathrm{Fe}}^{3+}$ in acidic medium, then ${\mathrm{Fe}}^{2+}$ oxidised will be:

Which ordering of compounds is according to the decreasing order of the oxidation state of nitrogen?                                                                                                            

Oxidation number of carbon in carbon suboxide $\left({\mathrm{C}}_3{\mathrm{O}}_2\right)$ is ____.

$2 \mathrm{g}$ of anhydrous ${\mathrm{BaCl}}_2$, present in a solution, was quantitatively converted into $2.25 \mathrm{g}$ of ${\mathrm{BaSO}}_4$. Find the equivalent weight of $\mathrm{Ba}$.