MCQ
Which of the following is not an element
- AGraphite
- BDiamond
- ✓$22-$ carat gold
- DRhombic sulphur
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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
