3. a) For each of the following pairs of halides, tell which one is the "more hindered" halide? Hindered here refers to the accessibility of the carbon bound to the halide. q=a or or -CI -Br

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Chapter1: Chemical Foundations
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**3. a) For each of the following pairs of halides, determine which one is the "more hindered" halide. In this context, "hindered" refers to the accessibility of the carbon atom that is bonded to the halide.**

**Pair 1:**
- Structure on the left: A six-membered ring (cyclohexane) with a chlorine (Cl) attached at one of the carbons.
- Structure on the right: A linear alkane with three carbon atoms and a chlorine (Cl) attached to the central carbon.

**Pair 2:**
- Structure on the left: A six-membered ring (cyclohexane) with a bromine (Br) attached at one of the carbons.
- Structure on the right: A six-membered ring (cyclohexane) with a bromine (Br) attached at an equatorial position.

**Pair 3:**
- Structure on the left: A linear alkane with four carbon atoms and a bromine (Br) attached to the second carbon.
- Structure on the right: A linear alkane with three carbon atoms and a bromine (Br) attached to the central carbon.

**Pair 4:**
- Structure on the left: A linear alkane with five carbon atoms and a bromine (Br) attached to the second carbon from the end.
- Structure on the right: A linear alkane with four carbon atoms and a bromine (Br) attached to the second carbon from the end, but with an additional methyl group attached to the second carbon as well.

For each pair, compare the steric hindrance around the carbon bonded to the halide and determine which structure is more hindered.
Transcribed Image Text:**3. a) For each of the following pairs of halides, determine which one is the "more hindered" halide. In this context, "hindered" refers to the accessibility of the carbon atom that is bonded to the halide.** **Pair 1:** - Structure on the left: A six-membered ring (cyclohexane) with a chlorine (Cl) attached at one of the carbons. - Structure on the right: A linear alkane with three carbon atoms and a chlorine (Cl) attached to the central carbon. **Pair 2:** - Structure on the left: A six-membered ring (cyclohexane) with a bromine (Br) attached at one of the carbons. - Structure on the right: A six-membered ring (cyclohexane) with a bromine (Br) attached at an equatorial position. **Pair 3:** - Structure on the left: A linear alkane with four carbon atoms and a bromine (Br) attached to the second carbon. - Structure on the right: A linear alkane with three carbon atoms and a bromine (Br) attached to the central carbon. **Pair 4:** - Structure on the left: A linear alkane with five carbon atoms and a bromine (Br) attached to the second carbon from the end. - Structure on the right: A linear alkane with four carbon atoms and a bromine (Br) attached to the second carbon from the end, but with an additional methyl group attached to the second carbon as well. For each pair, compare the steric hindrance around the carbon bonded to the halide and determine which structure is more hindered.
**Nucleophilic Substitution and Elimination: A Worksheet Lab**

**Pre-Lab**

1. **Identify the following organic transformations. Are they "substitutions" or "additions" or "eliminations"? Write formulas that clearly illustrate your selection. Pay attention to the organic part of the transformations.**

**Example:**

[Diagram showing an organic reaction]

**Reaction Details:**
- **Reactants:** C₅H₁₂ + Br₂
- **Conditions:** Ultraviolet light
- **Products:** C₅H₁₁Br + HBr

**Explanation:**
This is a "substitution" reaction. Here, a hydrogen atom (H) has been replaced (substituted) by a bromine atom (Br).
Transcribed Image Text:**Nucleophilic Substitution and Elimination: A Worksheet Lab** **Pre-Lab** 1. **Identify the following organic transformations. Are they "substitutions" or "additions" or "eliminations"? Write formulas that clearly illustrate your selection. Pay attention to the organic part of the transformations.** **Example:** [Diagram showing an organic reaction] **Reaction Details:** - **Reactants:** C₅H₁₂ + Br₂ - **Conditions:** Ultraviolet light - **Products:** C₅H₁₁Br + HBr **Explanation:** This is a "substitution" reaction. Here, a hydrogen atom (H) has been replaced (substituted) by a bromine atom (Br).
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