व्हाट इज प्रायमरी सेकेंडरी एंड टर्टियरी एल्कोहल
Answers
Answer:
−OH group is attached with primary, secondary and tertiary alcohols with primary, secondary and tertiary carbon atoms respectively. In Victor Meyer method when these alcohols are treated with HI, AgNO
2
, HNO
2
and NaOH respectively they produce red, blue and colourless solution respectively.
Victor Meyer's method:
(i) The given alcohol is converted into an iodide by concentrated HI or red phosphorous and iodine.
(ii) The iodide is treated with silver nitrite to form nitroalkane.
(iii) Nitroalkane is finally treated with nitrous acid (NaNO
2
+H
2
SO
4
) and made alkaline with KOH.
If a blood red colour is obtained, the original alcohol is primary.
If a blue colour is obtained, the alcohol is secondary.
If no colour is produced, the alcohol is tertiary.