A Handbook States That to Prepare a Particular Buffer Solution

question 84

Multiple Choice

A handbook states that to prepare a particular buffer solution mix 39.0 mL of 0.20 M aqueous NaH₂PO₄ with 61.0 mL of 0.20 M aqueous Na₂HPO₄.What will be the pH of this buffer? For phosphoric acid Ka₂= 6.2 × 10^-8

• A)7.2
• B)7.4
• C)7.0
• D)6.8
• E)6.6

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Motives

Internal states or desires that drive individuals to take actions towards achieving specific goals.

Subconscious

A part of the mind that influences thoughts and actions without one's full awareness.

Psychosexual Energy

in Freudian psychoanalysis, the driving force behind human behavior, stemming from the libido or sexual energy.

Libido

A term used in psychoanalytic theory to denote the energy associated with sexual instincts and drives.