Which of the following alkynes is the most stable?

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Q: Which of the following alkynes is the most stable?

Solution: 2-butyne is more stable than 1-butyne due to steric hindrance and hyperconjugation.

Steps: 7

Step 1: Understand what alkynes are. Alkynes are hydrocarbons that contain at least one triple bond between carbon atoms.
Step 2: Identify the two alkynes in the question: 1-butyne and 2-butyne.
Step 3: Recognize that 1-butyne has the triple bond at the end of the carbon chain, while 2-butyne has the triple bond in the middle.
Step 4: Learn about steric hindrance. This means that when groups of atoms are too close together, they can push against each other, making the molecule less stable.
Step 5: Understand hyperconjugation. This is when the electrons from a neighboring carbon-carbon bond can help stabilize the molecule.
Step 6: Compare the two alkynes: 2-butyne has less steric hindrance because the triple bond is in the middle, allowing for better distribution of electron density.
Step 7: Conclude that 2-butyne is more stable than 1-butyne because it has less steric hindrance and benefits from hyperconjugation.