A Buffer Solution Is Made by Dissolving 0

question 40

Multiple Choice

A buffer solution is made by dissolving 0.230 moles of sodium hypochlorite in 1.00 L of 0.220 M hypochlorous acid.What is the pH of the solution after 0.0100 moles of sodium hydroxide is added? (The K_a of HClO is 2.9 * 10^-8.)

• A)6.520
• B)6.404
• C)7.578
• D)7.480
• E)7.596

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Definitions:

Size Constancy

The tendency to perceive objects as being the same size even though the sizes of their images on the retina may differ as a result of distance.

Infants

Young babies, typically under one year of age, who are in the earliest stage of human life, characterized by rapid physical and cognitive development.

Age

A measurement of the length of time that an individual has been alive, typically expressed in years.

Visual Acuity

Measures the clarity or sharpness of vision, often assessed by one’s ability to identify letters or numbers at a standardized distance on an eye chart.