MCQ
Aromatic nitriles $(ArCN)$ are not prepared by reaction
- ✓$ArX + KCN$
- B$ArN_2^ + + CuCN$
- C$ArCON{H_2} + {P_2}{O_5}$
- D$ArCON{H_2} + {SOCL_2}$
$ArN_2^ + + CuCN \to ArCN + {N_2} + C{u^ + }$
$ArCON{H_2}\mathop {\xrightarrow{{{P_2}{O_5}}}}\limits_{ - {H_2}O} ArCN$
$ArCON{H_2} + SOC{l_2} \to ArCN + S{O_2} + 2HCl$
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$[\log 5=0.698, \log 7=0.845, \log 2=0.301]$
$C{o^{3 + }}{e^ - } \longrightarrow C{o^{2 + }};\,{E^o} = 1.81\,V$
$P{b^4} + 2{e^ - } \longrightarrow P{b^{2 + }};\,{E^o} = + 1.67\,V$
$C{e^{4 + }} + {e^ - } \longrightarrow C{e^{3 + }};\,{E^o} = + 1.61\,V$
$B{i^{3 + }} + 3{e^ - } \longrightarrow Bi;\,{E^o} = + 0.20\,V$
Oxidizing power of the species will increase in the order