Comparing ethyne, ethane and ethene, which of the following is the most acidic?A.EthaneB.EtheneC.EthyneD.All of these molecules have identical acidity
Question
Comparing ethyne, ethane and ethene, which of the following is the most acidic?A.EthaneB.EtheneC.EthyneD.All of these molecules have identical acidity
Solution
The most acidic of the three is Ethyne (C). This is because it has a triple bond between the two carbon atoms, which allows it to stabilize the negative charge better when it loses a proton (H+). This makes it more likely to donate a proton and thus, makes it more acidic. Ethane and Ethene are less acidic because they have single and double bonds respectively, and are less capable of stabilizing the negative charge.
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