CBSE Class 12 · 2010 · All India · Compounds Containing NitrogenShort Answer

Identify A and B in each of the following processes:
i) CH₃CH₂Cl →NaCN→ A →reduction Ni/H₂→ B
ii) C₆H₅NH₂ →NaNO₂/HCl→ A →C₆H₅NH₂, OH⁻→ B

Answer: (i) A = propanenitrile C₂H₅CN; B = propan-1-amine. (ii) A = benzenediazonium chloride; B = p-aminoazobenzene.

Solution

(i)

C_{2} H_{5} Cl NaCN C_{2} H_{5} CN (A) H_{2} /Ni C_{2} H_{5} C H_{2} N H_{2} (B)

(ii)

C_{6} H_{5} N H_{2} NaN O_{2} /HCl, 273K C_{6} H_{5} N_{2}^{+} C l^{-} (A) C_{6} H_{5} N H_{2} C_{6} H_{5} N = N - C_{6} H_{4} N H_{2} (p) (B)

CBSE Class 12 Board · 2010 · All India · Subjective