SELECT * FROM question_mgmt as q WHERE id=3085 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=2 AND subId=9 AND chapterId=54 and ex_no='1' AND status=1 ORDER BY CAST(question_no AS UNSIGNED) CBSE Free NCERT Solution of 11th chemistry Hydrocarbons an alkene lsquo a rsquo contains three c ndash

Question:

An alkene ‘A’ contains three C – C, eight C – H σ bonds and one C – C π bond. ‘A’ on ozonolysis gives two moles of an aldehyde of molar mass 44 u. Write IUPAC name of ‘A’.

Answer:

It is given that, 'A' on ozonolysis gives two moles of an aldehyde of molar mass 44 u. The formation of two moles of an aldehyde indicates the presence of identical structural units on both sides of the double bond containing carbon atoms. Hence, the structure of 'A' can be represented as:

XC = CX

There are eight C-H σ bonds. Hence, there are 8 hydrogen atoms in 'A'. Also, there are three C-C bonds. Hence, there are four carbon atoms present in the structure of 'A'.

Combining the inferences, the structure of 'A' can be represented as:

'A' has 3 C-C bonds, 8 C-H σ bonds, and one C-C π bond.

Hence, the IUPAC name of 'A' is But-2-ene.

Ozonolysis of 'A' takes place as:

The final product is ethanal with molecular mass

= [(2x12) + (4x1) + (1x16)]

= 44u


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SELECT ex_no,question,question_no,id,chapter FROM question_mgmt as q WHERE courseId='2' AND subId='9' AND ex_no!=0 AND status=1 and id!=3085 ORDER BY last_viewed_on desc limit 0,10

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  • 4 months ago

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