Chapter U2.8, Problem 4E

Interpretation Introduction

Interpretation:

How compounds can be created with specific smell using chemistry needs to be explained.

Concept introduction:

Different compounds have different structural features particularly functional groups so different compounds have different type of smells.

Answer to Problem 4E

Scientist can use chemistry to synthesize molecules with specific functional groups corresponding to specific smell.

Explanation of Solution

Many natural compounds are there which have specific smell. For example limonene is responsible for the smell of orange. It is used as flavoring agent in different food.

Structure of limonene is given below.

On the other hand, L-limonene has piny turpentine like odor.

Structure is given below.

Thus, smell depends on the structure of the molecule. Scientists can use chemistry to include different functional groups with different streochemical orientation (optical isomers) to have different smell.

Conclusion

Thus, chemistry can be used to create compounds with specific smell.