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Compare the acidic strengths of ethyne, ...

Compare the acidic strengths of ethyne, propyne and 2-butyne.

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Ethyne has two acidic hydrogen atoms. Propyne has only one acidic hydrogen atom. 2-Butyne has no acidic hydrogen atoms.
Alkyne with hydrogen atom present attached directly to .sp hybridised carbon atom is acidic.
Hence, the correct order of acidic strength is : Ethyne `gt` Propyne `gt` 2-Butyne.
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AAKASH SERIES-ALIPHATIC HYDROCARBONS-QUESTIONS FOR DESCRIPTIVE ANSWERS
  1. Compare the acidic strengths of ethyne, propyne and 2-butyne.

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  2. C(2)H(5)Clunderset(KOH)overset(Alc)toAunderset(C Cl(4))overset(Br(2))t...

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  3. Among aliphatic hydrocarbons, why alkanes are less reactive?

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  4. Propene reacts with HBr to give isopropyl bromide but not n-propyl bro...

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  5. A gaseous mixture contains ethylene and acetylene. How are they separa...

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  6. How is unsaturation in organic compounds tested ?

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  7. A gaseous mixture contains ethane and ethylene. How are the individual...

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  8. Propanal and propanone are the ozonolysis products of an alkene. Wžite...

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  9. Name the product of addition of sulphur monochloride to ethylene? What...

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  10. Various products formed when ethylene reacts with concentrated sulphur...

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  11. Give the equation for the reaction between 1-butene and chlorine water...

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  12. Acetylene gives a compound 'X' when treated with water in the presence...

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  13. Write IUPAC names of the products obtained by the ozonolysis of the fo...

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  14. Only propanone is formed during the ozonolysis of an alkene ? Give its...

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  15. Write the major and minor products formed when 1-butene adds on HBr in...

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  16. Give the structural formula of the product formed when n-propyl alcoho...

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  17. Write the IUPAC names of the products obtained by the ozonolysis of th...

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  18. Which of the following would exhibit geometrical isomerism ? Hex-2-ene...

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  19. An alkene 'A' contains three C-C, eight C-H bonds and one C=C bond. 'A...

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  20. Among ethylene and acetylene, which is more reactive towards electroph...

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  21. Differentiate between linear polymerisation and cyclic polymerisation ...

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