1. Tardigrade
  2. Question
  3. Chemistry
  4. Which of the following alkynes is most acidic?

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. Which of the following alkynes is most acidic?

Hydrocarbons

Solution:

But-2-yne has no hydrogen attached to sp hybridised carbon. So all other compounds are more acidic than it. But-1-yne and Propyne have groups having + I effect attached to triple bond. As the number of groups which gives +I effect increases, acidic character decreases.
$\left( CH _{3} \rightarrow\right.$ gives $+ I$ effect $)$
Thus, ethyne is most acidic of all four compounds.