Redox Reactions

Which of the following statement is incorrect regarding the equation $\mathrm{MeCHO}+\left[\mathrm{Ag}\left(\mathrm{NH}_{3}\right)_{2}\right]^{+}+\overset{\bar{}}{O}H\longrightarrow\,\mathrm{MeCOO}^{-}+\mathrm{Ag}$

Only \(2 $\mathrm{~mL}\)$ of $\(\mathrm{KMnO}_4\)$ solution of unknown molarity is required to reach the end point of a titration of \(20 $\mathrm{~mL}\)$ of oxalic acid \((2 $\mathrm{M})\)$ in acidic medium. The…

A $20.0\mathrm{mL}$ solution containing $0.2g$ impure $H_{2}O_{2}$ reacts completely with $0.316g$ of $\mathrm{KMnO}_{4}$ in acid solution. The purity of $H_{2}O_{2}$ (in $%$) is______ (mol. wt. of $H_{2}O_{2}=34$; mol.…

The neutralization occurs when $10\mathrm{mL}$ of $0.1M$ acid '$A$' is allowed to react with $30\mathrm{mL}$of $0.05M$ base $M\left(\mathrm{OH}\right)_{2}$. The basicity of the acid '$A$' is [$M$is a metal]

A $2.0g$sample containing $\mathrm{MnO}_{2}$ is treated with $\mathrm{HCl}$ liberating $\mathrm{Cl}_{2}$. The $\mathrm{Cl}_{2}$ gas is passed into a solution of $\mathrm{KI}$ and $60.0\mathrm{mL}$ of…

In alkaline medium, the reduction of permanganate anion involves a gain of ____________ electrons.

In mildly alkaline medium, thiosulphate ion is oxidized by $\mathrm{MnO}_{4}^{-}$ to $"A"$. The oxidation state of sulphur in $"A"$ is_

$4g$ equimolar mixture of $\mathrm{NaOH}$ and $\mathrm{Na}_{2}\mathrm{CO}_{3}$ contains $\mathrm{xg}$ of $\mathrm{NaOH}$ and $\mathrm{yg}$ of $\mathrm{Na}_{2}\mathrm{CO}_{3}.$The value of $x$ is $g.$ (Nearest integer)

$2\mathrm{MnO}_{4}^{-}+\mathrm{bC}_{2}O_{4}^{2-}+\mathrm{cH}^{+}\rightarrow\,\mathrm{xMn}^{2+}+\mathrm{yCO}_{2}+\mathrm{zH}_{2}O$ If the above equation is balanced with integer coefficients, the value of $c$is _______ .…

When $10\mathrm{mL}$of an aqueous solution of $\mathrm{Fe}^{2+}$ ions was titrated in the presence of dil $H_{2}\mathrm{SO}_{4}$ using diphenylamine indicator, $15\mathrm{mL}$ of $0.02M$ solution of…

Consider titration of $\mathrm{NaOH}$ solution versus $1.25M$ oxalic acid solution. At the end point following burette readings were obtained. (i) $4.5\mathrm{mL}$ (ii) $4.5\mathrm{mL}$ (iii)$4.4\mathrm{mL}$ (iv)…

$\mathrm{KMnO}_{4}$is titrated with ferrous ammonium sulphate hexahydrate in presence of dilute $H_{2}\mathrm{SO}_{4}.$ Number of water molecules produced for $2$ molecules of $\mathrm{KMnO}_{4}$is$_______$