Redox Reactions

Given below are two statements.Statement-I: In $\text{H}_2\text{O}_2$, each oxygen atom is assigned an oxidation number of $-1$, in $\text{RbO}_2$ each oxygen atom is assigned an oxidation number of $-\dfrac{1}{2}$.Statement-II: Representat...

$a\text{C}_2\text{O}_4^{2-} + b\text{MnO}_4^- + c\text{H}^+ \rightarrow x\text{Mn}^{2+} + y\text{H}_2\text{O} + z\text{CO}_2$$a$ and $x$ respectively are

In the titration of potassium permanganate $\left(\mathrm{KMnO}_4\right)$ against Ferrous ammonium sulphate $(\mathrm{FAS})$ solution, dilute sulphuric acid but not nitric acid is used to maintain acidic medium, because

In the reaction between hydrogen sulphide and acidified permanganate solution,

\(\text { Match List-I with List-II }\)






List-I (Types of redox reactions)

List-II (Examples)





a. Combination reaction

i.





Cl





2

(





g



)



...

In the reaction between moist $\mathrm{SO}_2$ and acidified permanganate solution.

\(a \mathrm{MnO}_4^{-}+b \mathrm{~S}_2 \mathrm{O}_3^{2-}+\mathrm{H}_2 \mathrm{O} \longrightarrow x \mathrm{MnO}_2 +y \mathrm{SO}_4^{2-}+z \mathrm{OH}^{-}\)
\(a\) and \(y\) respectively are

The reducing agent in the given equations
\(4 \mathrm{Ag}(s)+8 \mathrm{CN}^{-}(a q)+2 \mathrm{H}_2 \mathrm{O}(a q)+\mathrm{O}_2(g) \longrightarrow 4\left[\mathrm{Ag}(\mathrm{CN})_2\right]^{-}(a q)+4 \mathrm{OH}^{-}(a q)\)
$$2\left[\mathrm{...

All Cu(II) halides are known, except the iodide, the reason for it is that

In which of the following compounds, an element exhibits two different oxidation states?

Which of the following is not true for oxidation?

How many moles of acidified \(\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7\) is required to liberate 6 moles of \(\mathrm{I}_2\) from an aqueous solution of \(\mathrm{I}^{-}\)?

The oxidation number of nitrogen atoms in \(\mathrm{NH}_4 \mathrm{NO}_3\) are

In which of the following cases a chemical reaction is possible?

In the reaction of gold with aquaregia, oxidation state of nitrogen changes from

Which of the following statement is correct?

The number of moles of electron required to reduce 0.2 mole of \(\mathrm{Cr}_2 \mathrm{O}_7^{-2}\) to \(\mathrm{Cr}^{+3}\) is

$\mathrm{KMnO}_4$ acts as an oxidising agent in alkaline medium. When alkaline $\mathrm{KMnO}_4$ is treated with KI , iodide ion is oxidised to

For the redox reaction

$$ \begin{aligned} x \mathrm{MnO}_4^{-}+y \mathrm{H}_2 \mathrm{C}_2 \mathrm{O}_4+ & z \mathrm{H}^{+} \longrightarrow \\ & m \mathrm{Mn}^{2+}+n \mathrm{CO}_2+p \mathrm{H}_2 \mathrm{O} . \end{aligned} $$
The values of...

$3 \mathrm{ClO}^{-}(a q) \longrightarrow \mathrm{ClO}^{-}+2 \mathrm{Cl}^{-}$is an example of

Extraction of chlorine from brine solution is based on