For 1200 ML of a Buffer That Is 0

question 154

Multiple Choice

For 120.0 mL of a buffer that is 0.40M in HOCl and 0.42 M in NaOCl, what is the pH after 17.5 mL of 1.1 M NaOH is added? K_a for HOCl = 3.5 × 10^-8. (Assume the volumes are additive.)

• A) 7.12
• B) 7.48
• C) 7.43
• D) 7.07
• E) 7.84

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Definitions:

Sample Sizes

The number of observations or data points collected or selected from a population to be analyzed in statistical research.

Sample Means

The average value of a set of data points taken from a larger population.

Population Means

The average value of a given property within a specific population, serving as a central measure of the data set.

Bonferroni Adjustment

A statistical correction method used to reduce the chances of obtaining false-positive results (Type I error) when performing multiple comparisons.