MCQ
Carnallite in solution in ${H_2}O$, shows the properties of
- ✓${K^ + },M{g^{2 + }},C{l^ - }$
- B${K^ + },C{l^ - },SO_4^{2 - },B{r^ - }$
- C${K^ + },M{g^{2 + }},CO_3^{2 - }$
- D${K^ + },M{g^{2 + }},C{l^ - },B{r^ - }$
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$I_2 + 2e^-\to 2I^-$ ; $E^o = 0.54 \,V$
$MnO_4^-+ 8H^+ + 5e^-\to Mn^{2+} + 4H_2O$ ; $E^o = 1.52\, V$
$Fe^{3+} + e^-\to Fe^{2+}$ ; $E^o = 0.77\, V$
$Sn^{4+} + 2e^-\to Sn^{2+}$ ; $E^o = 0.1\, V$
The strongest reducant and oxidant respectively are :