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Solved: Determine the pH of each solution and classify it as acidic, basic, or

Chapter 14, Problem 83P

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QUESTION:

Determine the pH of each solution and classify it as acidic, basic, or neutral.

(a) pOH = 8.5

(b) pOH = 4.2

(c) pOH = 1.7

(d) pOH = 7.0

Questions & Answers

QUESTION:

Determine the pH of each solution and classify it as acidic, basic, or neutral.

(a) pOH = 8.5

(b) pOH = 4.2

(c) pOH = 1.7

(d) pOH = 7.0

ANSWER:

Solution: Here, we are going to determine the pH of the given solution and classify them as acidic, basic or neutral.

Step1:

pH is the negative logarithm to base 10 of hydrogen ion concentration whereas pOH is the negative logarithm to base 10 of hydroxyl ion concentration, i.e.,

 pOH =  - log[OH- ] and pH = - log[H+ ]

And pH + pOH =14

We can distinguish acidic, neutral and basic aqueous solutions by the relative values of their pH

                        Acidic: pH < 7

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