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Explore TopicChoose the Best Answer
A
It has a high concentration of hydrogen ions.
B
It contains a large amount of hydroxide ions.
C
It is derived from a strong base.
D
It has a neutral pH value.
Understanding the Answer
Let's break down why this is correct
Answer
A pH of 2 means the solution contains a high concentration of hydrogen ions, specifically 10⁻² moles per liter. Since pH is defined as the negative logarithm of the hydrogen ion concentration, a lower pH value indicates more H⁺ ions are present. This excess of H⁺ ions is the hallmark of an acidic environment because acids donate H⁺ to the solution. For example, a 0. 01‑M solution of hydrochloric acid has 0.
Detailed Explanation
The solution contains many hydrogen ions (H+). Other options are incorrect because The misconception is that many hydroxide ions (OH-) make a solution acidic; Some think a solution comes from a strong base to be acidic.
Key Concepts
Acidity and pH scale
Hydrogen ion concentration
Neutralization
Topic
Acids and Bases
Difficulty
hard level question
Cognitive Level
understand
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