A Certain Indicator HIn Has a PK_a of 9

question 55

Multiple Choice

A certain indicator HIn has a pK_a of 9.00 and a color change becomes visible when 7.00% of it is In^-.At what pH is this color change visible?

• A)10.2
• B)3.85
• C)6.15
• D)7.88
• E)none of these

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Definitions:

Closed Posture

A position that conveys the feeling of not being totally receptive to what is being said; arms are often rigid or folded across the chest.

Boredom

A state of feeling uninterested, weary, or impatient due to a lack of stimulation, excitement, or engagement.

Leaning Back

A posture where one inclines the torso backwards from a vertical or standing position, often for relaxation or balancing purposes.

Active Listening

The practice of fully concentrating, understanding, responding, and remembering what is being said in a conversation.