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)

Differentiate between various symptoms (emotional, cognitive, motivational, behavioral) of depression.

Distinguish between general feelings of sadness and depressive disorders.

Identify the characteristics and symptoms of manic episodes.

Recognize the role of neurotransmitters and internal neuron communication in mood disorders.

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