Multiple Choice
Phenylephrine (PE; see the structure below) is a nasal decongestant and is the active ingredient in Sudafed, which contains phenylephrine hydrochloride (PEHCl) .This conjugate acid of phenylephrine (PEH+) has a pKa= 5.5.At a physiological pH of 7.4, what is the ratio of concentrations, [PE]/[PEH+]? ![Phenylephrine (PE; see the structure below) is a nasal decongestant and is the active ingredient in Sudafed, which contains phenylephrine hydrochloride (PEHCl) .This conjugate acid of phenylephrine (PEH<sup>+</sup>) has a pK<sub>a</sub>= 5.5.At a physiological pH of 7.4, what is the ratio of concentrations, [PE]/[PEH<sup>+</sup>]? A) 6.7 B) 0.01 C) 0.14 D) 79 E) 21](https://d2lvgg3v3hfg70.cloudfront.net/TB6562/11eb182e_a22b_9736_88c1_9d879d517106_TB6562_00.jpg)
A) 6.7
B) 0.01
C) 0.14
D) 79
E) 21
Correct Answer:
Verified
Correct Answer:
Verified
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