A student drew this mechanism to illustrate a proton transfer. Which statement about the student's arrows is true? Ö: : OH products Neither arrow is drawn correctly Both arrows are drawn correctly, but there is a missing arrow Both arrows are drawn correctly One arrow is fine, but the other is drawn incorrectly
A student drew this mechanism to illustrate a proton transfer. Which statement about the student's arrows is true? Ö: : OH products Neither arrow is drawn correctly Both arrows are drawn correctly, but there is a missing arrow Both arrows are drawn correctly One arrow is fine, but the other is drawn incorrectly
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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![**Proton Transfer Mechanism Evaluation**
In the following example, a student has illustrated a mechanism to depict a proton transfer. Your task is to analyze the correctness of the arrows in the presented mechanism.
**Mechanism Illustration:**
- **Reactant Structure:** A benzene ring attached to a carbon center, which is single bonded to a hydroxyl group (OH) and double bonded to an oxygen atom (O).
- The hydroxyl group has a negative charge (O with three lone pairs)
- The carbon (attached to the oxygen and hydroxyl group) is connected to the benzene ring.
- **Arrow 1:** Curved arrow pointing from the lone pair on the negatively charged oxygen atom of the OH group to a hydrogen atom (H) attached to the another oxygen atom (O).
- **Arrow 2:** Curved arrow pointing from the bond between the hydrogen (H) and oxygen (O) aiming towards the oxygen atom (O).
**Products:** The products are not explicitly shown in the diagram; it merely mentions "products" with an equilibrium arrow pointing towards it.
**Question:**
"Which statement about the student's arrows is true?"
**Options:**
- Neither arrow is drawn correctly
- Both arrows are drawn correctly, but there is a missing arrow
- Both arrows are drawn correctly
- One arrow is fine, but the other is drawn incorrectly
**Interpretation Guide:**
To provide educational context and deeper understanding, examine whether the arrows correctly represent the movement of electrons during the proton transfer. Check if the arrows:
1. Properly showcase the lone pair initiating the attack on the hydrogen.
2. Correctly depict bond breaking between the hydrogen and oxygen, with the electrons reverting back to the oxygen.
**Assessment Discussion:**
Deliberate over each answer option and decide which statement correctly evaluates the student's representation. If necessary, draw additional structures to visualize the complete reaction pathway. Provide feedback and an accurate analysis to educate the student about proper arrow notation and electron flow in proton transfer mechanisms.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ffb6abb0f-4367-447a-ab31-0a44cd95ae50%2Fc84e956d-dbc1-42c4-8855-e5e4f786aae3%2Fxmu1stv_processed.png&w=3840&q=75)
Transcribed Image Text:**Proton Transfer Mechanism Evaluation**
In the following example, a student has illustrated a mechanism to depict a proton transfer. Your task is to analyze the correctness of the arrows in the presented mechanism.
**Mechanism Illustration:**
- **Reactant Structure:** A benzene ring attached to a carbon center, which is single bonded to a hydroxyl group (OH) and double bonded to an oxygen atom (O).
- The hydroxyl group has a negative charge (O with three lone pairs)
- The carbon (attached to the oxygen and hydroxyl group) is connected to the benzene ring.
- **Arrow 1:** Curved arrow pointing from the lone pair on the negatively charged oxygen atom of the OH group to a hydrogen atom (H) attached to the another oxygen atom (O).
- **Arrow 2:** Curved arrow pointing from the bond between the hydrogen (H) and oxygen (O) aiming towards the oxygen atom (O).
**Products:** The products are not explicitly shown in the diagram; it merely mentions "products" with an equilibrium arrow pointing towards it.
**Question:**
"Which statement about the student's arrows is true?"
**Options:**
- Neither arrow is drawn correctly
- Both arrows are drawn correctly, but there is a missing arrow
- Both arrows are drawn correctly
- One arrow is fine, but the other is drawn incorrectly
**Interpretation Guide:**
To provide educational context and deeper understanding, examine whether the arrows correctly represent the movement of electrons during the proton transfer. Check if the arrows:
1. Properly showcase the lone pair initiating the attack on the hydrogen.
2. Correctly depict bond breaking between the hydrogen and oxygen, with the electrons reverting back to the oxygen.
**Assessment Discussion:**
Deliberate over each answer option and decide which statement correctly evaluates the student's representation. If necessary, draw additional structures to visualize the complete reaction pathway. Provide feedback and an accurate analysis to educate the student about proper arrow notation and electron flow in proton transfer mechanisms.
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