As the pH value becomes higher, what happens to the basicity of a solution?
Answer and explanation
Correct answer: It increases
On the usual pH scale, values below seven indicate acidity, seven is approximately neutral, and values above seven indicate basicity. As pH rises above the neutral point, hydrogen-ion concentration decreases relative to hydroxide-ion concentration, so basicity increases. Therefore option A is correct. Options B and C reverse the trend, while D applies only to a solution that remains near pH seven.
Frequently asked questions
What is the correct answer to this question?
It increases
Why is this the correct answer?
On the usual pH scale, values below seven indicate acidity, seven is approximately neutral, and values above seven indicate basicity. As pH rises above the neutral point, hydrogen-ion concentration decreases relative to hydroxide-ion concentration, so basicity increases. Therefore option A is correct. Options B and C reverse the trend, while D applies only to a solution that remains near pH seven.
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.
