2.7 Ranking Acids and Bases with CARDIO (Orbitals) (Quiz)
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This is the OC Ch. 2.7 Quiz of Mike’s Videos. Please read the following before starting:
1. You will not be timed.
2. An exam overview is provided, allowing you to mark questions for review and skip between questions easily.
3. Each question will be immediately scored and display the solution after you click “Check”, allowing you to improve your skills as you go along.
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Question 1 of 4Mike's Videos - OC Ch. 2.7 Quiz
1. Question
1. Which of the red-colored hydrogen atoms below is most acidic?
Correct / You marked this question
The greater the s-character of the atom that hydrogen is bonded to, the greater the acidity of that proton. Proton B is bonded to a carbon which is sp-hybridized, having 50% s-character and thus is the most acidic.
Proton C and D are both bonded to carbons which are sp2-hybridized, having 33% s-character. Proton A is bonded to a carbon which is sp3-hybridized, having 25% s-character.
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The greater the s-character of the atom that hydrogen is bonded to, the greater the acidity of that proton. Proton B is bonded to a carbon which is sp-hybridized, having 50% s-character and thus is the most acidic.
Proton C and D are both bonded to carbons which are sp2-hybridized, having 33% s-character. Proton A is bonded to a carbon which is sp3-hybridized, having 25% s-character.
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Question 2 of 4Mike's Videos - OC Ch. 2.7 Quiz
2. Question
2. Which of the red-colored hydrogen atoms below is most acidic? Which is the least?
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The more positively-charged the molecule, the more acidic it is. Hence, Proton B is the most acidic.
The more negatively-charged the molecule, the more basic it is (and thus the less acidic it is). Hence, Proton C is the least acidic.
Incorrect / You marked this question
The more positively-charged the molecule, the more acidic it is. Hence, Proton B is the most acidic.
The more negatively-charged the molecule, the more basic it is (and thus the less acidic it is). Hence, Proton C is the least acidic.
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Question 3 of 4Mike's Videos - OC Ch. 2.7 Quiz
3. Question
3. Which of the red-colored hydrogen atoms below is most acidic?
Correct / You marked this question
The greater the s-character of the atom that hydrogen is bonded to, the greater the acidity of that proton. Proton C is bonded to a nitrogen which is sp-hybridized, having 50% s-character and thus is the most acidic.
Proton B is bonded to a nitrogen which is sp2-hybridized, having 33% s-character. Proton A is bonded to a nitrogen which is sp3-hybridized, having 25% s-character.
Incorrect / You marked this question
The greater the s-character of the atom that hydrogen is bonded to, the greater the acidity of that proton. Proton C is bonded to a nitrogen which is sp-hybridized, having 50% s-character and thus is the most acidic.
Proton B is bonded to a nitrogen which is sp2-hybridized, having 33% s-character. Proton A is bonded to a nitrogen which is sp3-hybridized, having 25% s-character.
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Question 4 of 4Mike's Videos - OC Ch. 2.7 Quiz
4. Question
4. Which of the red-colored hydrogen atoms below is most acidic?
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Proton A looks like it is bonded to a carbon that is sp3-hybridized but the conjugate base is actually sp2-hybridized in addition to being aromatic and stabilized by resonance.
None of the other molecules have a resonance-stabilized, aromatic conjugate base so they are all less acidic.
Incorrect / You marked this question
Proton A looks like it is bonded to a carbon that is sp3-hybridized but the conjugate base is actually sp2-hybridized in addition to being aromatic and stabilized by resonance.
None of the other molecules have a resonance-stabilized, aromatic conjugate base so they are all less acidic.
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