MCQ
A gem dichloride is formed in the reaction except :
- A$CH_3CHO$ and $PCl_5$
- B$CH_3COCH_3$ and $PCl_5$
- ✓$CH_2 = CH_2$ and $Cl_2$
- D$CH_2 = CHCl$ and $HCl$
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$Ca{C_2}\xrightarrow{{{H_2}O}}A\mathop {\xrightarrow{{{\text{dil}}{\text{. }}{H_2}S{O_4}}}}\limits_{H{g^{ + + }}} B\mathop {\xrightarrow{{Ni}}}\limits_{{H_2}} C$
$C{o^{3 + }}{e^ - } \longrightarrow C{o^{2 + }};\,{E^o} = 1.81\,V$
$P{b^4} + 2{e^ - } \longrightarrow P{b^{2 + }};\,{E^o} = + 1.67\,V$
$C{e^{4 + }} + {e^ - } \longrightarrow C{e^{3 + }};\,{E^o} = + 1.61\,V$
$B{i^{3 + }} + 3{e^ - } \longrightarrow Bi;\,{E^o} = + 0.20\,V$
Oxidizing power of the species will increase in the order