Chapter 9, Problem 134A

Interpretation Introduction

Interpretation:

The chemical reactions that occurs in the kitchen needs to be explained.

Concept introduction:

In a chemical reaction, atoms of substances rearrange to form a new substance.

Answer to Problem 134A

Chemical reactions that occur in the kitchen are as follows:

1.

2. ${\text{H}}_{\text{2}}+{\text{S}}_{\text{2}}\to {\text{H}}_{\text{2}}\text{S}$

3. ${\text{CH}}_4+{\text{4O}}_{\text{2}}\to {\text{CO}}_{\text{2}}+{\text{H}}_{\text{2}}\text{O}$

Explanation of Solution

There are various reactions that occur in kitchen. Three examples of reacts are:

Maillard reaction occurs on cooking meat. This reaction occurs between amino acids and reducing sugars. The reaction is as follows:

On overheating egg hydrogen and sulfide in the egg white reacts and form hydrogen sulfide. The reaction is as follows:

${\text{2H}}_{\text{2}}+{\text{S}}_{\text{2}}\to 2{\text{H}}_{\text{2}}\text{S}$

On burning wood ${\text{CO}}_{\text{2}}$ gas will form and the reaction is as follows:

${\text{CH}}_4+2{\text{O}}_{\text{2}}\to {\text{CO}}_{\text{2}}+2{\text{H}}_{\text{2}}\text{O}$

Conclusion

Maillard reaction occurs on cooking meat. On overheating egg hydrogen and sulfide in the egg white reacts and form hydrogen sulfide and on burning wood ${\text{CO}}_{\text{2}}$ gas will form.