Question

What is the ph of with a 4.6 x 10-6 M hydroxide ion concentration?

A. 0.663
B. 3.33
C. 10.1
D. 10.7

Answer 1

10.7

Step-by-step explanation:

I just took the test and this was correct

Answer 2

pH = 8.66

Step-by-step explanation:

• The pH refers to the acidity or alkalinity of a solution.
• It is calculated by getting the negative logarithm of Hydrogen ions concentration.

• pH=-log[H⁺]

In this case;

we are given [OH⁻] as 4.6 x 10^-6 M

We are required to calculate the pH

We need to know that;

pH + pOH = 14

pOH = -log[OH⁻]

To get the pH we can calculate the pOH first,

pOH = -log[4.6 x 10^-6 M]

= 5.34

but, pH + pOH = 14

Therefore, pH = 14 - pOH

= 14 - 5.34

= 8.66

Therefore, the pH of the solution is 8.66