The Following Pictures Represent Solutions That Contain a Weak Acid

question 177

Multiple Choice

The following pictures represent solutions that contain a weak acid HA and/or its potassium salt KA.Unshaded spheres represent H atoms and shaded spheres represent A^- ions.(K⁺,H₃O⁺,OH^-,and solvent H₂O molecules have been omitted for clarity. )
-For which solution(s) is pH = pK_a?

• A)only solution (1)
• B)only solution (2)
• C)only solution (3)
• D)solutions (1)and (3)

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Definitions:

Psychological Comfort

The state of mental well-being and contentment, stemming from security, a sense of belonging, or relief from distress.

Orthostatic Hypotension

A form of low blood pressure that occurs upon standing up from sitting or lying down, often leading to dizziness or fainting.

Risk For Falls

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Light-Headedness

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