HSC Science (General) 12th Board ExamMaharashtra State Board
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How Are 1 - Nitropropane, 2-nitropropane and 2-methyl 2- Nitropropane Are Distinguished from Each Other Using Nitrous Acid? - HSC Science (General) 12th Board Exam - Chemistry

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Question

How are 1 - nitropropane, 2-nitropropane and 2-methyl 2- nitropropane are distinguished from each other using nitrous acid?

Solution

1-Nitropropane reacts with nitrous acid to form blue-coloured nitrosonitroalkanes which dissolve in NaOH to give red solution.

 

2-Nitropropane reacts with nitrous acid to form blue-coloured nitrosonitroalkanes which are further insoluble in NaOH because of the absence of the alpha hydrogen atom.

2-Methyl2-nitropropane does not react with nitrous acid because it has no alpha-hydrogen atom.

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APPEARS IN

 2015-2016 (March) (with solutions)
Question 7.2 | 7.00 marks
Solution How Are 1 - Nitropropane, 2-nitropropane and 2-methyl 2- Nitropropane Are Distinguished from Each Other Using Nitrous Acid? Concept: Amines - Identification of Primary, Secondary and Tertiary Amines.
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