MCQ
Which of the following species can act as reducing agent ?
- A$[Co(CO)_4]^-$
- B$Cr(CO)_6$
- C$Mn(CO)_5$
- ✓$Mn(CO)_6$
So, $\left(3 \times 2 e ^{-}=6 e ^{-}\right) ; 2$ $NO$ can easily replaced $3 CO$.
$\left(6 \times 2 e ^{-}=12 e ^{-}\right) ; 4 NO$ can easily replace $6 CO$
$Fe ( CO )_{5} \rightarrow Fe ( NO )_{2}( CO )_{2}$
$Cr ( CO )_{5} \rightarrow Cr ( NO )_{4}$
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Major product formed in above reation is
$Cu_{(s)} + 2Ag^+_{(aq)} \rightarrow Cu^{2+}_{(aq)} + 2Ag_{(s)}\,;$
$E^o = 0.46\, V$ at $298\, K$ is