Calculate the PH of a Buffer That Is 0

question 3

Multiple Choice

Calculate the pH of a buffer that is 0.115 M HC₂H₃O₂ and 0.160 M KC₂H₃O₂.The K_a for HC₂H₃O₂ is 1.8 × 10^-5.

• A) 4.89
• B) 8.81
• C) 4.74
• D) 5.15
• E) 4.60

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Definitions:

Standard Deviation

A statistic that measures the dispersion or variability of a dataset relative to its mean.

Standard Deviation

An indicator of the spread or fluctuations in a data set, showing the degree to which the data points deviate from the average value.

Parameter

A numerical characteristic of a statistical population, such as a mean or standard deviation, that describes some aspect of the population.

Simple Random Sample

A sample in which each member of the population has an equal chance of being selected.