A solution has [OH^-]= 5.0 *10^-⁴ M. The pH of this solution is A) 3.30 B) 2.00 * 10^-¹¹ C) 5.35 D) 10.70 E) none of these

Question

Quizplus · Accepted Answer

The given concentration of hydroxide ions ([OH-]) is 5.0 x 10^-10 M. To find the pH, we first calculate the pOH using the formula pOH = -log[OH-]. Then, we use the relationship pH + pOH = 14 (at 25°C) to find the pH. Given [OH-] = 5.0 x 10^-10 M, pOH = -log(5.0 x 10^-10) ≈ 9.3. Therefore, pH = 14 - 9.3 = 4.7. Since none of the provided options match this calculation, the correct answer is E) none of these.

A Solution Has [OH-]= 5

A Solution Has [OH^-]= 5