Which of the Following Acids Would You Use to Make

question 18

Multiple Choice

Which of the following acids would you use to make an effective buffer for a reaction at pH 8?

• A) Ethanoic acid; K_a = 1.7  10^-5
• B) Diphosphoric acid; K_a = 1.4  10^-7
• C) Tris-hydroxmethylaminoethane; K_a = 8.3  10^-9
• D) Ammonium chloride; K_a = 5.6  10^-10
• E) Sodium bicarbonate; K_a = 5.3  10^-11

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Definitions:

Sample Proportion

The quotient of the number of successful outcomes to the total number of observations in a sample, often used as an estimate of the population proportion.

Number of Fish Tanks

The count of containers used to hold fish, typically utilized for keeping aquatic pets or for breeding.

Sample Mean

The average value of a sample, which is a subset of a larger population, used to estimate the population mean.

Without Replacement

A sampling method where each selected unit is not returned to the population before the next unit is selected.