What is the pH of a solution with [OH-] = 5.8 x 10-10 M?Select one:A.

1.	What is the pH of a solution with [OH-] = 5.8 x 10-10 M?Select one:A. 5.80B. 10.58C. 4.76D. 9.24
Answer» We are given that - [OH⁻] = *5.8 10⁻¹⁰ M We need to find - => pH of this solution. Procedure Used - Find the pOH using -log₁₀[OH⁻ ] 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.

What is the pH of a solution with [OH-] = 5.8 x 10-10 M?Select one:A. 5.80B. 10.58C. 4.76D. 9.24

Answer»

[OH⁻] = 5.8 * 10⁻¹⁰ M

=> pH of this solution.

=> 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)

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

=> 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.