Redox Reactions

What is the number of electrons released in conversion of $\mathrm{C}_2 \mathrm{O}_4^{2-}$ to $\mathrm{CO}_2$ ?

Calculate the number of electrons required to reduce completely $0.1 \mathrm{~mol} \mathrm{Al}^{+3}$ ions from aqueous $\mathrm{Al}_2\left(\mathrm{SO}_4\right)_3$ solution.

What is change in oxidation number of ' Mn ' during the decolourisation of acidified potassium permanganate by moist sulfur dioxide?

What is the average oxidation number of carbon in carbon suboxide $\mathrm{C}_3 \mathrm{O}_2$ ?

Which of the following changes exhibit that nitrogen undergoes oxidation?

Calculate the number of moles of electrons required to convert $1.1 \mathrm{~mol} \mathrm{Cr}_2 \mathrm{O}_7^{2-}$ to $\mathrm{Cr}^{3+}$ in acidic medium.

Identify oxidant in following reaction.
\(3 \mathrm{H}_3 \mathrm{AsO}_{3(\mathrm{aq})}+\mathrm{BrO}_{3(\mathrm{aq})}^{-} \longrightarrow \mathrm{Br}_{(\mathrm{aq})}^{-}+3 \mathrm{H}_3 \mathrm{AsO}_{4(\mathrm{aq})}\)