Question

please explain both in the simpliest way im lost

4. Draw missing resonance structures in the boxes below Curved arrows are not required. H Organic compounds can serve as Bronsted-Lowry acid in water. The degree of deprotonation in aqueous solution depends 5. Acetaminophen is the active ingredient in Tylenol® and is insoluble in water. However, its deprotonated form is soluble in on the strength of the acid (pKa) and the pH of the aqueous solution. water when strong enough base is used. Knowing that the pKa of acetaminophen is around 9.5, estimate the degree of deprotonation at pH= 11.5 Но. [c.base] (acid] pH pKa + log- aqueous buffer Н н Tylenol®

Answer 1

Ho 0 + H+ 12 Given that pka of the acetaminophen = 9.5 and pH= 11.5 = [ht] = 3.16x 10? But, bon weak and, [GT]= (x = 1 kaxe Applying logaritim on both side -dog (14+] = -log( KaKc) '2 - - log Ka - loge - pts te pka - I loge 11.5= 9.5-2 log(e) cs 0.0001 = 104 Where Ċ it the concentration of acetaminophen : 2 = CH 3.16x 102: 3.16x168 104