Question

How many isomeric alcohol of molrcular formula c5h12o gives blue color in victor maeyer test finally?

Answer 1

iVictor mayer test is used to distinguish between the primary, secondary and tertiary alcohol. In this test alcohol is treated with iodine in presence of phosphorous to get iodo alkane. This iodo alkane reacts with silver nitrite which further reacts with sodium hydroxide. After reacting with sodium hydroxide, primary alcohol produces red colour complex, while secondary alcohol produces blue complex and tertiary not produces any color complex.

Answer 2

3 isomeric alcohols of C₅H₁₂O will give blue color in Victor Meyers Test.

• Victor Meyers Test is a test to detect the primary, secondary, and tertiary alcohols based on the colors obtained after the test.
• With primary alcohols, red color is obtained, with secondary alcohols, the blue color is obtained, and the tertiary alcohols show no color.
• Eight isomeric alcohols can be obtained from the molecular formula C₅H₁₂O.
• These are:

1. Petan-1-ol
2. Pentan-2-ol
3. Pentan-3-ol
4. 3-Methylbutan-1-ol
5. 2-Methylbutan-2-ol
6. 2,2 Dimethylpropan-1-ol
7. 2-Methylbutan-1-ol
8. 3-Methylbutan-2-ol

• Out of these 8, only Pentan-2-ol, Pentan-3-ol, and 3-Methylbutan-2-ol are secondary alcohols and thus will give blue color in the test.