Question 1
The base-dissociation constant of ethylamine (C
2H
5NH
2) is 6.4 × 10
-4 at 25.0 °C. The [H
+] in a

aqueous solution of ethylamine is ________ mol L
-1.
◦ 3.5 × 10
-12◦ 2.9 × 10
-3◦ 3.1 × 10
-12◦ 3.2 × 10
-3◦ 11.46
Question 2
The concept of an acid not limited to H
+ or species containing one or more protons is inherent in:
◦ only the Arrhenius theory
◦ both the Arrhenius and the Br

nsted-Lowry theories
◦ only the Br

nsted-Lowry theory
◦ both the Br

nsted-Lowry and the Lewis theories
◦ only the Lewis theory