MCQ
Which of the following is a good oxidising agent ?
- ✓$Pb^{+4}$
- B$Pb^{+2}$
- C$Ga^{+3}$
- D$Sn^{4+}$
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$Fe^{3+} + e \to Fe^{2+} ;$ $E^o = 0.771\, volts$
$I_2 + 2e\to 2I^-;$ $E^o = 0.536\, volts$
$E^o$ cell for the cell reaction
$2Fe^{3+} + 2I^-\to 2Fe^{2+} + I_2$ is
(The freezing point depression constant for water $=2\; \mathrm{K}\; \mathrm{kg} \;\mathrm{mol}^{-1}$ )
Unknown product $(P)$ of the above reaction is
$Zn(s)\,\,|,\,Zn^{+2}_{(aq.)}\,\,|| Ag^+_{(aq.)}\,\,| Ag(s)$
$E^o_{Zn^{+2}/Zn}\,\,=\,-\,0.76V\,\, ;\,\, E^o_{Ag^+ /Ag}\,\, = 0.80V$