The ethylammonium ion, CH³CH₂NH3* has a pk, of

10.81. It reacts with water to form ethylamine,

CH,CHINH2

and H3O* as shown below.

CHỊCHÍNH + HO – CHỊCHÍNH, + HO*

Which of the following statements is true at pH 7?

Select one:

a. ethylammonium ion predominates

O b. ethylamine predominates

O c. the concentration of ethylamine equals that of

ethylammonium ion

O d. the pH is higher than pk, of the ethylammonium

ion