Between pH two and pH six, which solution will be more acidic?
Answer and explanation
Correct answer: The one with pH two
Acidity increases as pH decreases because lower pH corresponds to a greater hydrogen-ion concentration. Since 2 is lower than 6, the solution with pH 2 is more acidic, so option A is correct. On the logarithmic pH scale, the difference of four units represents a 10⁴, or 10,000-fold, difference in hydrogen-ion concentration, assuming comparable conditions.
Frequently asked questions
What is the correct answer to this question?
The one with pH two
Why is this the correct answer?
Acidity increases as pH decreases because lower pH corresponds to a greater hydrogen-ion concentration. Since 2 is lower than 6, the solution with pH 2 is more acidic, so option A is correct. On the logarithmic pH scale, the difference of four units represents a 10⁴, or 10,000-fold, difference in hydrogen-ion concentration, assuming comparable conditions.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Acids, Bases, and Salts.
