If the pH value is less than 7, what is the nature of the solution?
Answer and explanation
Correct answer: Acidic
At about 25 °C, the pH scale classifies aqueous solutions: pH 7 is neutral, values below 7 are acidic, and values above 7 are basic or alkaline. A pH below 7 indicates a relatively higher concentration of hydrogen ions than in a neutral solution. Therefore the solution is acidic. Option B describes pH above 7, option C corresponds approximately to pH 7, and option D is not a pH classification.
Frequently asked questions
What is the correct answer to this question?
Acidic
Why is this the correct answer?
At about 25 °C, the pH scale classifies aqueous solutions: pH 7 is neutral, values below 7 are acidic, and values above 7 are basic or alkaline. A pH below 7 indicates a relatively higher concentration of hydrogen ions than in a neutral solution. Therefore the solution is acidic. Option B describes pH above 7, option C corresponds approximately to pH 7, and option D is not a pH classification.
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.
