A 250 ML Sample of 0

question 95

Multiple Choice

A 25.0 mL sample of 0.150 mol L^-1 hydrofluoric acid is titrated with a 0.150 mol L^-1 NaOH solution. What is the pH before any base is added? Hydrofluoric acid is monoprotic. The of hydrofluoric acid is 3.5 × 10^-4.

• A) 2.33 × 10^-3
• B) 2.63
• C) 3.46
• D) 7.07 × 10^-3
• E) 2.15

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Definitions:

Random Variable

A variable representing numerical results from a chance event.

Standard Normal

A normal distribution with a mean of 0 and a standard deviation of 1, used as a basis for comparing different distributions.

Obtaining

The act of acquiring or securing something.

Standard Normal

A bell-shaped distribution where the mean is 0 and the standard deviation is 1.