Question

For which pH change is there the maximum increase in acidity?

पर्याय

• Initial pH	Final pH
  1	3

• Initial pH	Final pH
  2	6

• Initial pH	Final pH
  3	1

• Initial pH	Final pH
  6	2

Answer 1

Initial pH	Final pH
6	2

Explanation:

According to the pH scale, the lesser the pH, the more the acidity. When pH decreases from 6 to 2, the amount of H⁺ increases 10,000 times.

pH = −log₁₀ [H⁺] ⟶ [H⁺] = 10^−pH ​

Initial [H⁺] = 10⁻⁶ = 0.000001 mol/L

Final [H⁺] = 10⁻² = 0.01 mol/L

Change = `0.01/0.000001` = 10,000 times more acidic