A Solution Is Prepared by Dissolving 0 $K_{a}$ Of Formic Acid Is 1

question 87

Multiple Choice

A solution is prepared by dissolving 0.23 mol of formic acid and 0.27 mol of sodium formate in water sufficient to yield 1.00 L of solution.The addition of 0.05 mol of NaOH to this buffer solution causes the pH to increase slightly.The pH does not increase drastically because the NaOH reacts with the ________ present in the buffer solution.The $K_{a}$ of formic acid is 1.8 × 10^-4.

• A) \( \mathrm{H}_{2}O \)
• B) \( \mathrm{H}_{3} \mathrm{O}^{+} \)
• C)formate
• D)formic acid
• E)This is a buffer solution: the pH does not change upon addition of acid or base.

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Definitions:

Binomial Distribution

A probability distribution that describes the number of successes in a fixed number of independent Bernoulli trials with the same probability of success.

Mean

The arithmetic average of a set of numbers, calculated by dividing the sum of these numbers by the count of the numbers in the set.

Probability Of Success

The likelihood of achieving a favorable outcome in a binomial setting or experiment.

Constant

A fixed value that does not change.