Activities and Due Dates | Pre-lecture Assignment (PLA) 02 (extra credit El Paso

Question

Activities and Due Dates | Pre-lecture Assignment (PLA) 02 (extra credit El Paso - CHEM 3330-Fal16-XIAO Gradebook 9/5/2016 10:55 PM58.3/100 () 8/30/2016 11:34 AM Question 15 of 24 noorrectIncoreect OH At what pH would the structure above be the predominant lonization state? Note: Consider the ionization state of all three of the functional groups. pH= 19.1 Scroll down for more of this question. The protonated form of the R group of tyrosine is shown in the structure above. The ratio of the protonated form to the charged (deprotonated) form depends on the pk, of thr group and the pH of the solution Select the pH value at which the charged form of the R group would predominate. O 2.7 O 7.0 O 10.1 O 11.8 Previous Previous Cve Up & Vew Solubonm ®Give Up &View; Solution 0ck Answer Next Ext Hint us careers partners privacy policy terms of use contact us MacBook Air

Explanation / Answer

1) the correct answer is 2.7

becasue pI of tyrosine = 2.2 + 9.11 ) / 2 = 6.65

and therefore

less than pH = 6.65 or a acidic solution ( ph= 2.7) will dominant for the shown structure of tyrosine.

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.