A detergent solution has a pH of 11.63 at 25C. What is the hydroxide ion concentration?
Answer:
ANSWER:
[OH-] = 0.0043 M
SOLUTION:
We'll be able to answer that, we must find the pOH value. From the equation:
pH + pOH = 14
We can re-write the equation as:
pOH = 14 - pH
pOH = 14 - 11.63
.:. pOH = 2.37
Now that we know the pOH, we can solve for the [OH-] by:
pOH = -log [OH-]
Re-writing the equation, we get:
[OH-] = 10^ -pOH
.:. [OH-] = 10^ -2.37
.:. [OH-] = 0.0043 M
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