Chapter U4.84, Problem 6E

Interpretation Introduction

Interpretation: The pattern in the name and chemical formulas of given acids needs to be explained.

• Hydrochloric acid − HCl
• Nitric acid − ${\text{HNO}}_{\text{3}}$
• Acetic acid − ${\text{CH}}_{\text{3}}\text{COOH}$
• Carbonic acid − ${\mathrm{H}}_{2}C{O}_3$
• Sulfuric acid − ${\text{H}}_{\text{2}}{\text{SO}}_{\text{4}}$
• Citiric acid − ${\text{C}}_{\text{6}}{\text{H}}_{\text{8}}{\text{O}}_{\text{7}}$

Concept Introduction:

On the basis of taste, reactivity and presence of ions; substances can be classified as acidic and basic. An acidic substance can be defined as the substance that can give ${\text{H}}^{\text{+}}$ ions in the solution. A basic substance can give ${\text{OH}}^{\text{-}}$ ions in its solution.

Answer to Problem 6E

In the given acids; the most common pattern in the names of molecules is that all names are ended with −ic acid.

In the chemical formula the common pattern is the presence of H because an acid should give ${\text{H}}^{\text{+}}$ ions.

Explanation of Solution

Given information:

Hydrochloric acid − HCl

Nitric acid − ${\text{HNO}}_{\text{3}}$

Acetic acid − ${\text{CH}}_{\text{3}}\text{COOH}$

Carbonic acid − ${\mathrm{H}}_{2}C{O}_3$

Sulfuric acid − ${\text{H}}_{\text{2}}{\text{SO}}_{\text{4}}$

Citiric acid − ${\text{C}}_{\text{6}}{\text{H}}_{\text{8}}{\text{O}}_{\text{7}}$

Acidic and basic substance can also be classified on the basis of taste. Acidic substances are sour in taste whereas basic substances are bitter in taste.

In the given acids; the most common pattern in the names of molecules is that all names are ended with −ic acid.

In the chemical formula the common pattern is the presence of H becuase an acid should give ${\text{H}}^{\text{+}}$ ions.

Conclusion

• Names are ended with −ic acid.
• Presence of H in the chemical formula as an acid should give ${\text{H}}^{\text{+}}$ ions.