What Concentration of HF (K_a = 7

question 1

Multiple Choice

What concentration of HF (K_a = 7.2  10^-4) has the same pH as that of 0.069 M HCl?

• A) 6.6 M
• B) 5.0  10^-6 M
• C) 1.0  10^-2 M
• D) 0.069 M
• E) 0.15 M

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Definitions:

Frequency Histogram

A graphical representation showing the frequency of various outcomes in a dataset, usually with bars.

Frequency Distribution

A statistical representation that shows the number of occurrences of each value in a dataset, often displayed in a table or graph.

Class Width

The difference between the upper and lower boundaries of a class interval in frequency distribution.

Relative Frequency Distributions

These distributions show the proportion of observations within a dataset that belong to different categories or intervals.