A solution with a pH of 2 is how many times more acidic than a solution with pH 4?

Correct option is B

The correct answer is (B) 100 times
Explanation:
• pH scale is logarithmic in nature.
• Each decrease of 1 pH unit increases acidity by 10 times.
• Difference between pH 2 and pH 4 is 2 units.
• Therefore, acidity increases by 10² times.
• Hence, the solution is 100 times more acidic.
Information Booster:
• pH = –log₁₀[H⁺]
• Lower pH means higher hydrogen ion concentration.
Additional Knowledge (Incorrect Options):
(A) 200 times
• pH scale does not increase linearly.
(C) 2 times
• Ignores logarithmic nature of pH scale.
(D) 10 times
• Applies only for 1 unit pH difference.