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Hydrogenation of alkenes and alkynes tak...

Hydrogenation of alkenes and alkynes takes place in presence of certain catalysts. In Sabatier Senderen's reaction, the addition of hydrogen takes place I presence of Raney nickel catalyst. Platininm and palladium can also be used as catalyst and used in finley divided state. Experimentally, it is observed that less crowded alkenes adsorb `H_(2)` with faster rate. Controlled hydrogenation of alkyne `H_(2)` with faster rate. Controlled hydrogenation of alkyne in presence of Lindlar's catalyst yields cis product i.e., 'cis' alkene. Thus, in presence of Lindlar's catalyst 'syn' addition takes place. The relative rate of hydrogenation follows the order:

Non-terminal alkynes are reduced in presence of Na or Li metal dissolved in liquid ammonia. In this reaction, anti-addition of hydrogen results into the trans-product.
Answer the following questions:
The relative rate of catalytic hydrogenation of following alkenes is:

A

II gt III gt IV gt I

B

I gt IV gt III gt II

C

III gt IV gt I gt II

D

II gt IV gt I gt III

Text Solution

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The correct Answer is:
A
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Hydrogenation of alkenes and alkynes takes place in presence of certain catalysts. In Sabatier Senderen's reaction, the addition of hydrogen takes place I presence of Raney nickel catalyst. Platininm and palladium can also be used as catalyst and used in finley divided state. Experimentally, it is observed that less crowded alkenes adsorb H_(2) with faster rate. Controlled hydrogenation of alkyne H_(2) with faster rate. Controlled hydrogenationof alkyne in presence of Lindlar's catalyst yields cis product i.e., 'cis' alkene. Thus, in presence of Lindlar's catalyst 'syn' addition takes place. The relative rate of hydrogenation follows the order: Non-terminal alkynes are reduced in presence of Na or Li metal dissolved in liquid ammonia. In this reaction, anti-addition of hydrogen results into the trans-product. The product of the following reaction is:

Hydrogenation of alkenes and alkynes takes place in presence of certain catalysts. In Sabatier Senderen's reaction, the addition of hydrogen takes place I presence of Raney nickel catalyst. Platininm and palladium can also be used as catalyst and used in finley divided state. Experimentally, it is observed that less crowded alkenes adsorb H_(2) with faster rate. Controlled hydrogenation of alkyne H_(2) with faster rate. Controlled hydrogenation of alkyne in presence of Lindlar's catalyst yields cis product i.e., 'cis' alkene. Thus, in presence of Lindlar's catalyst 'syn' addition takes place. The relative rate of hydrogenation follows the order: Non-terminal alkynes are reduced in presence of Na or Li metal dissolved in liquid ammonia. In this reaction, anti-addition of hydrogen results into the trans-product. H_(3)C-C-=C-CH_(3)+H_(2) overset(Pd//CaCO_(3))underset("Boiling Quinoline")to (A) The product (A) will be:

Hydrogenation of alkyne is

Addition of hydrogen to alkene in presence of nickel catalyst is

The gas(es) used in the hydrogenation of oils in presence of nickel as a catalyst is/are:

the catalyst used in the hydrogenation of oils is :

OP TANDON-UNSATURATED HYDROCARBONS-LINKED COMPREHENSION TYPE QUESTIONS
  1. Hydrogenation of alkenes and alkynes takes place in presence of certai...

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  2. Hydrogenation of alkenes and alkynes takes place in presence of certai...

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  3. Hydrogenation of alkenes and alkynes takes place in presence of certai...

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  4. Hydrogenation of alkenes and alkynes takes place in presence of certai...

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  5. Hydrogenation of alkenes and alkynes takes place in presence of certai...

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  6. Oxidation without clevage of sigma bond takes place in alkenes. P...

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  7. Oxidation without clevage of sigma bond takes place in alkenes. P...

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  8. Oxidation without clevage of sigma bond takes place in alkenes. P...

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  9. Oxidation without clevage of sigma bond takes place in alkenes. P...

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  10. Oxidation without clevage of sigma bond takes place in alkenes. P...

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  11. Oxidation of alkenes by cleavage with the acidic or alkaline KmNO(4) o...

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  12. Oxidation of alkenes by cleavage with the acidic or alkaline KmNO(4) o...

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  13. Oxidation of alkenes by cleavage with the acidic or alkaline KmNO(4) o...

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  14. Oxidation of alkenes by cleavage with the acidic or alkaline KmNO(4) o...

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  15. Oxidation of alkenes by cleavage with the acidic or alkaline KmNO(4) o...

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  16. An alkene (A), C(5)H(12) on chlorination at 300^(@)C gives a mixture o...

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  17. An alkene (A), C(5)H(12) on chlorination at 300^(@)C gives a mixture o...

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  18. An acylic hydrocarbons P, having molecular formula C(6)H(10), gave ace...

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  19. An acylic hydrocarbons P, having molecular formula C(6)H(10), gave ace...

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  20. In the following reactions Answer the following questions:

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