What Is the Approximate PH at the Equivalence Point of a Weak

question 102

Multiple Choice

What is the approximate pH at the equivalence point of a weak acid-strong base titration if 25 mL of aqueous formic acid requires 29.80 mL of 0.2567 M NaOH? K_a = 1.8 × 10^-4 for formic acid.

• A)2.13
• B)5.56
• C)8.44
• D)11.87

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Definitions:

Probability

A measure of the likelihood of a given event occurring, often expressed as a number between 0 and 1.

Mutually Exclusive

Events or propositions that cannot both be true or occur at the same time, implying the occurrence of one event excludes the occurrence of the other.

P(A)

The probability of event A occurring.

P(B)

The probability of event B occurring.