MCQ
When $KMn{O_4}$ reacts with acidified $FeS{O_4}$
- AOnly $FeS{O_4}$ is oxidised
- BOnly $KMn{O_4}$ is oxidised
- ✓$FeS{O_4}$ is oxidised $KMn{O_4}$ and is reduced
- DNone of these
$2KMn{O_4} + 3{H_2}S{O_4}\, \to \,{K_2}S{O_4} + 2MnS{O_4}$
$[2FeS{O_4} + {H_2}S{O_4}\, \to \,F{e_2}{(S{O_4})_3} + 2H] \times 5$
$[2H + [O]\, \to \,{H_2}O] \times 5$
$\overline {2KMn{O_4} + 8{H_2}S{O_4} + 10FeS{O_4}{\mkern 1mu} \to } $
${K_2}S{O_4} + 2MnS{O_4} + 5F{e_2}{(S{O_4})_3} + 8{H_2}O$
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$Pt\,|\,B{r_{2(\ell )0.1M}}\,|\,Br_{({\text{aq}}),0.1M}^ - \,||\,H_{_{({\text{aq}})0.1M}}^ + \,|\,{H_{2(g)1atm}}\,|\,Pt$ given ; $E_{B{r^ - }/B{r_2}}^0\, = \, - 1.06\,V$
${K_2}Cr_2{O_7}/{H^ + } + y \to \mathop {C{r^{ + 3}} + Others}\limits_{(green)\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} $