### 18. Is the molecule shown chiral or achiral?#### Diagram:The diagram shows a cyclic molecule with a square ring, consisting of four carbon atoms. Two hydroxyl (OH) groups are attached to two adjacent carbon atoms.#### Options:- **A. Chiral**- **B. Achiral**### 19. Is the molecule shown chiral or achiral?#### Diagram:This molecule is a linear carbon chain with four carbon atoms. The first carbon has one hydrogen atom (H) attached, followed by a triple bond connecting the second and third carbon atoms. The fourth carbon has two groups: a methyl group (CH3) and a carboxyl group (CO2OH) attached in a wedge configuration.---### Explanation:- **Chiral Molecules**: Have non-superimposable mirror images and typically contain an asymmetric carbon atom (chiral center).- **Achiral Molecules**: Have superimposable mirror images and lack a chiral center. The questions ask whether each molecule has a chiral center, determining if they are chiral or achiral.

Interpretation: A given molecule is chiral or achiral is to be determined.

Answered: 18. Is the molecule shown chiral or…

18. Is the molecule shown chiral or achiral? OH HO, A. Chiral B. Achiral 19. Is the molecule shown chiral or achiral? Esliz 8 c=c=cl CH3 CO2OH

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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Concept explainers

Stereochemistry and Isomerism

Stereochemistry deals with the three-dimensional structure and properties of molecules. It explains the arrangement of atoms and their manipulation within a molecule in a 3D structure. Stereochemistry can be dealt with all types of molecules. Based on the stereochemistry of a molecule, the physical and chemical properties of the molecules vary.

Question

### 18. Is the molecule shown chiral or achiral?

#### Diagram:
The diagram shows a cyclic molecule with a square ring, consisting of four carbon atoms. Two hydroxyl (OH) groups are attached to two adjacent carbon atoms.

#### Options:
- **A. Chiral**
- **B. Achiral**

### 19. Is the molecule shown chiral or achiral?

#### Diagram:
This molecule is a linear carbon chain with four carbon atoms. The first carbon has one hydrogen atom (H) attached, followed by a triple bond connecting the second and third carbon atoms. The fourth carbon has two groups: a methyl group (CH3) and a carboxyl group (CO2OH) attached in a wedge configuration.

---

### Explanation:

- **Chiral Molecules**: Have non-superimposable mirror images and typically contain an asymmetric carbon atom (chiral center).
- **Achiral Molecules**: Have superimposable mirror images and lack a chiral center.

The questions ask whether each molecule has a chiral center, determining if they are chiral or achiral.

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