MCQ
The fructose molecule in sucrose exists as
- ✓Furanose
- BPyranose
- COpen chain
- DAll

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At $ 298 K : \Delta_{ f } H ^{\circ}\left( SnO _2( s )\right)=-581.0 kJ mol ^{-1}, \Delta_{ fH } H ^{\circ}\left( CO _2( g )\right)=-394.0 kJ mol ^{-1}$
$S ^{\circ}\left( SnO _2( s )\right)=56.0 J K ^{-1} mol ^{-1}, S ^{\circ}( Sn ( s ))=52.0 J K ^{-1} mol ^{-1}$
$S ^{\circ}( C ( s ))=6.0 J K ^{-1} mol ^{-1}, S ^{\circ}\left( CO _2( g )\right)=210.0 J K ^{-1} mol ^{-1}$
Assume that the enthalpies and the entropies are temperature independent.
$Cu^{+2} +e^-\to Cu^+\,\,\,\,\,E^o = 0.15\,volt$
$Cu^{+2} + 2e^-\to Cu\,\,\,\,\,E^o = 0.34\, volt$
What will be the $E^o$ for half cell
$Cu^+ + e^-\to Cu$ ? ........... $\mathrm{volt}$