Question

What is the pH of a solution with [OH-] = 5.8 x 10-10 M?


Select one:
A. 5.80
B. 10.58
C. 4.76
D. 9.24

Answer 1

Answer:

4.76 is your answer

Explanation:

Mark a brainliest answer

Answer 2

We are given that -

[OH⁻] = 5.8 * 10⁻¹⁰  M

We need to find -

=> pH of this solution.

Procedure Used -

1. Find the pOH using -log₁₀[OH⁻ ]
2. Subtract the pOH from 14 to get the pH (pH + pOH = 14)

Let's Solve -

=> pOH = -log₁₀[5.8 * 10⁻¹⁰ ]        ( log₁₀[5.8 * 10⁻¹⁰ ] = -9.236 )

=> pOH = -1 * -9.236

=> pOH = 9.236 (approx.)

=> pH + pOH = 14

=> pH + 9.236 = 14

=> pH = 14 - 9.236

=> pH = 4.764

=> pH = 4.76 (rounded off to the nearest hundredths)

Answer -

=> Thus, the correct answer is (C) 4.76 .

More to know -

=> This compound has a pH below 7, so it is acidic.

=> It can be considered to be a weak acid as it has a pH close to 5.