A 200-ML Sample of 0

question 47

Multiple Choice

A 20.0-mL sample of 0.50 M H₂C₆H₆O₆ (ascorbic acid, a diprotic acid) was titrated with 0.50 M NaOH. The following data were gathered during the titration. What is K_a2 for ascorbic acid?

• A)6.8 × 10 ⁻⁵
• B)6.2 × 10 ⁻⁶
• C)6.2 × 10 ⁻⁷
• D)6.2 × 10 ⁻⁸
• E)2.8 × 10 ⁻¹²

Understand how physical activity and patient condition influence vital sign measurement.

Knowledge of the factors affecting blood pressure readings and how to measure it accurately.

Understand the significance of pulse characteristics, including force and rhythm, in patient assessment.

Recognize the influence of environmental, physical, and emotional factors on body temperature.

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