MCQ
When ethyl bromide is treated with moist $Ag_2O,$ main product is :
- AEthyl ether
- ✓Ethanol
- CEthoxy ethane
- DAll of the above
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$Fe^{3+} + e \to Fe^{2+}\, ;\, E^o = 0.771\,volt$
$I_2 + 2e \to 2I^-\, ;\, E^o = 0.536\,volt$
$E^o$ cell for the cell reaction
$2Fe^{3+} + 2I^-\to 2Fe^{2+}+ I_2$ is
$(a) P_2O_7^{4-}$ $(b) S_2O_5^{2-}$
$(c) S_2O_7^{2-}$ $(d) Cl_2O_7$
$(e) Mn_2O_7$ $(f) S_2O_8^{2-}$


$(i)$ $\left[ FeF _{6}\right]^{3-}$
$(ii)$ $\left[ Co \left( NH _{3}\right)_{6}\right]^{3+}$
$(iii)$ $\left[ NiCl _{4}\right]^{2-}$
$(iv)$ $\left[ Cu \left( NH _{3}\right)_{4}\right]^{2+}$