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Which of the catalysts should be used to...

Which of the catalysts should be used to hydrogenate but-2-yne into butane?

A

Pd

B

Ni

C

Pt

D

Any of these

Text Solution

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The correct Answer is:
D

When any of these catalysts is used, the alkynes henerally react with two molar equivalents of hydrogen to give an alkane:
The `DeltaH`'s of hydrogenation of the two steps are `-42 kcal mol^(-1)` and `-33kcalmol^(-1)`
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R SHARMA-ALKYNES-Follow-up Test 5
  1. Which of the following catalysts or chemical reagents are emplyted for...

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  2. Which of the following alkynes is not normally reduced to alkene by so...

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  3. Which of the catalysts should be used to hydrogenate but-2-yne into bu...

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  4. Which of the following is correct?

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  5. CH3C-=C CH3underset(CH3CH2OH)overset(Na)toP Identify the product.

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  6. When but-1-yne reacts with two equivalents of HBr, the major product i...

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  7. When but-1-yne reacts with two equivalents of HBr, in the presence of ...

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  8. Which of the following statements is correct?

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  9. Which of the following alkynes is insoluble in conc. H2SO4?

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  10. The product (s) obtained by the oxymercuration (HgSO4+aq.H2SO4) of but...

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  11. Which of the following reagents would convert but-1-yne into but-2-yne...

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  12. CH3C-=Choverset(NaNH2)toAoverset(D2O)toB Identify the product B.

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  13. Which of the following alkynes will not reacts with ammoniacal CuCl?

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  14. Pent-2-yne will yield on reductive ozonolysis.

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  15. Hept-3-yne reacts with to form a diketone

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  16. Like acetylene, the homologues of acetylene can also polymerize. Which...

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  17. Which of the followinig alkynes will produce isobutyric acid and CO2 o...

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  18. Which of the following reagents can distinguish between propene and pr...

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  19. Identify the product.

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