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underset((A))underset("Propa-1,2-diene")...

`underset((A))underset("Propa-1,2-diene")(Coverset(3)(H)_(2)=overset(2)(C)=overset(1)(C)H_(2))overset(NaNH_(2)+Liq.NH_(3))(rarr)(B)`
Which of the following statements is `//` are correct ?

A

Product `(B)` is `CH_(2)=CH-CH_(3).`

B

Product `(B)` is propyne.

C

Product `(B)` is more stable than `(A)`

D

Compound `(A)` has a more negative heat of hydrogenation than the compound `(B)`

Text Solution

Verified by Experts

The correct Answer is:
b,c

Alkynes are more stable than cumulative diene, so compound `(B)` should have more negative heat of hydrogenation.
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CENGAGE CHEMISTRY-ALKENES AND ALKADIENES-Multiple Correct Answer Type
  1. Which of the following statements is // are wrong ?

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  2. Which of the following statements is/are wrong ?

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  3. Which products are not formed ?

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  4. What other products is // are formed in Question ?

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  5. Product (B) is :

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  6. Which of the following dienes an dienophiles could be used to synthesi...

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  7. Which of the following statements is //are correct.

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  8. underset((A))underset("Propa-1,2-diene")(Coverset(3)(H)(2)=overset(2)(...

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  9. Which of the following statements is // are correct ?

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  10. (C) overset(H(3)O^(+)//H(2)O)(rarr)(E) (D) overset(H(3)O^(+)//H(2)O)...

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  11. Which of the following does not react with aqueous KMnO(4) ?

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  12. Which of the following decolourise(s)Br(2) solution ?

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  13. Which of the following statements is // are correct ?

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  14. Which of the following statements is // are correct ?

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  15. Which of the following Diels- Alder reactions do not take place ?

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  16. Which of the following statements is // are correct ?

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  17. Which of the following has the smallest heat of hydrogenation per mole...

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  18. The numberical values of (N) and (M) are :

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  19. The correct statement(s) concerning the structures E, F and G is/are

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  20. The correct statement(s) about the compound H(3)C(HO)HC-CH=CH-CH(OH)...

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