Acid Base Concepts And Principles

The pH of an acidic solution can be calculated using the formula: Given a hydrochloric acid (HCl) concentration of 0.001 M: Hence, the correct answer is (C) 3.

Bronsted-Lowry Definition:

• Acids: Substances that donate protons .
• Bases: Substances that accept protons .

Example: In this reaction, acts as a Bronsted base (accepting a proton), while serves as a Bronsted acid (donating a proton).
Relationship Between pH and pOH: We know the following equations: Also, it holds that: Taking the logarithm of both sides: