Question

Which one is not correct for the reaction?
$(Cn{)}_2+H_{2}O\to HCN+HOCN?$

• A. It is an auto redox change.
• B. Oxidation number of C in $(CN{)}_2,HCN$ and $HOCN$ are +3, +2 and +4 respectively.
• C. Oxidation number of n in $(CN{)}_2,HCN$ and $HOCN$ are +3, +2 and +4 respectively.
• D. The resultant solution is acidic.

Answer 1

Answer: (C)

Oxidation number of n in $(CN{)}_2,HCN$ and $HOCN$ are +3, +2 and +4 respectively.

$(CN{)}_2+H_{2}O\to HCN+HOCN$
+3 +2 +4
So, its a autoredox reaction.
And oxidation number of N in $(CN{)}_2,HCN$ and $HOCN$ are +3, +2 and +4 respectively.