Question

Caffeine is a very weak monobasic Bronsted base, with K_b = 4 x 10^-14. Spectroscopic and computational studies show that the proton most likely attaches on the imine nitrogen (–N=). Given this information, sketch the protonated form (A) and deprotonated form (B) of caffeine below, and indicate the regions of stability of each form as a function of pH on the chart from 0 to 14

Answer 1

Protonation is when a molecule gains a proton (H⁺). Deprotonation is when a molecule loses a proton.

protanated form of caffeine is:

CH3 CHa 3 CH3 Нас. H3C. 8 CH CH 3

deprotonated form of caffeine:

CH3 CH3 CH CH