What Is the PH of a Solution Made by Mixing

question 64

Multiple Choice

What is the pH of a solution made by mixing 30.00 mL of 0.10 M acetic acid with 40.00 mL of 0.10 M KOH? Assume that the volumes of the solutions are additive.K_a = 1.8 × 10^-5 for CH₃CO₂H.

• A)8.26
• B)9.26
• C)11.13
• D)12.15

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Definitions:

Four-Figure Accuracy

A precision level that indicates numerical values are accurate to within plus or minus one out of ten thousand.

Five-Figure Accuracy

Describes numerical values precise to five digits.

Repeating Decimal

A fraction represented in decimal form where a specific set of digits continues to repeat endlessly.

Percent Equivalent

A value expressing a number as a fraction of 100, used to describe the relative size of a part to a whole.