Embibe Experts Solutions for Chapter: Redox Reactions, Exercise 1: AP EAPCET - 20 Aug 2021 Afternoon

In the electrolysis of a ${\mathrm{CuSO}}_4$ solution, how many grams of $\mathrm{Cu}$ are plated out on the cathode, in the time that is required to liberate $5.6 \mathrm{L}$ of ${\mathrm{O}}_2( \mathrm{g})$, measured at $1 \mathrm{atm}$ and $273 \mathrm{K}$, at the anode?

In how many of the following compounds of sulphur, the oxidation state of sulphur atom is $+6 ?$

${\mathrm{H}}_2{\mathrm{S}}_2{\mathrm{O}}_8, {\mathrm{H}}_2{\mathrm{SO}}_5, {\mathrm{H}}_2{\mathrm{SO}}_3, {\mathrm{H}}_2{\mathrm{SO}}_4, {\mathrm{H}}_2{\mathrm{S}}_2{\mathrm{O}}_7, {\mathrm{SO}}_2{\mathrm{Cl}}_2, {\mathrm{SOCl}}_2$

Which among the following species doesn't show disproportionation reaction?

$2{\mathrm{KMnO}}_4+3{\mathrm{H}}_2{\mathrm{SO}}_4+5{\mathrm{H}}_2{\mathrm{O}}_2\to {\mathrm{K}}_2{\mathrm{SO}}_4+2{\mathrm{MnSO}}_4+8{\mathrm{H}}_2\mathrm{O}+5{\mathrm{O}}_2$
Find the nonnality of ${\mathrm{H}}_2{\mathrm{O}}_2$ solution, if $20 \mathrm{mL}$ of it is required to react completely with $16 \mathrm{mL}$ of $0.02{\mathrm{MKMnO}}_4$ solution. ( Molar mass of ${\mathrm{KMnO}}_4=158 \mathrm{g} {\mathrm{mol}}^{-1}$)

For the redox reaction ${\mathrm{MnO}}_4^{-}+{\mathrm{C}}_2{\mathrm{O}}_4^{2-}+{\mathrm{H}}^{+}\to {\mathrm{Mn}}^{2+}+{\mathrm{CO}}_2+{\mathrm{H}}_2\mathrm{O}$, the correct coefficients of the reactants for the balanced reaction are respectively ${\mathrm{MnO}}_4^{-},{\mathrm{C}}_2{\mathrm{O}}_4^{2-}$ and ${\mathrm{H}}^{+}$:

Which of the following statement is not correct?