QUESTION 5 Identify the most acidic compound of the group and the correct reason
ID: 546968 • Letter: Q
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QUESTION 5 Identify the most acidic compound of the group and the correct reason why it is the most acidic. HO OH 11110H 3 O 2 is the most acidic because inductive effects from the fluorine weaken the O-H bond. O 2 is the most acidic because the electronegativity of the fluorine strengthens the O.-H bond. O 3 is the most acidic because it is the only compound in the group without a halogen. O 1 is the most acidic because the position of its fluorine will have the greatest effect on the -OH group.Explanation / Answer
2 is the most acidic because inductive effects from the fluorine weaken the –O-H bond.
This is true because the fluorine is a more electronegative atom, which has more tendency to pull the electrons from the neighboring carbon and leading to weakening the –O-H bond.
2 is the most acidic because the electronegativity of the fluorine strengthens the –O-H bond.
The reasoning is wrong, because, the fluorine atom weakens the –O-H bond. Therefore, this option is not correct.
3 is the most acidic because it is the only compound in the group without a halogen.
This option is wrong. Because in presence of fluorine atom the molecule will get more polarity leads to weakening the –OH bond. Hence, cyclohexanol is the least acidic compound in the given compounds.
1 is the most acidic because the position of it fluorine will have the greatest effect on the –O-H bond.
The inductive effect is more at the alpha position than the beta position. In compound 1 we have beta carbon contains more polar group fluorine. Therefore, the inductive effect is less in the compound 1 than compound 2.
Therefore, this is not the correct option.
Hence, the correct Answer is :
2 is the most acidic because inductive effects from the fluorine weaken the –O-H bond.
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