Practice: Which of the following bases would more greatly favor the product side of a chemical reaction?
a) BeH2 b) H2Se c) SrH2 d) Pb(OH)4 e) HF
Bases represent compounds that neutralize acids when mixed
Strong & Weak Bases
Concept #1: A strong base can be formed when a Group 1A and some Group 2A metals combine with certain basic anions.
Example #1: Which of the following represents a strong base?
a) Be(OH)2 b) NaO2 c) LiNH2 d) Mg(OH)2 e) KIO
Concept #2: Strong Bases represent strong electrolytes and weak bases represent weak electrolytes.
Example #2: Which of the following bases will partially dissolve when placed in water?
a) LiOH b) NaNH2 c) Al(OH)3 d) Cs2O e) KOH
Concept #3: Amines represent a class of covalent compounds that can be either acidic or basic based on their charge.
Example #3: Identify the amine that will weakly accept a proton (H+) when in the presence of an acid.
a) H2NNH3+ b) (CH3)2NH c) CH3SH d) CH3NH3+ e) CH3CH2CH3
Practice: Which of the following compounds would be found as mostly molecules when placed into water?
I. Be(OH)2 II. HNO3 III. LiOH IV. (CHÂ3)2NH V. CaO
a) I, IV, V
b) I only
c) I and IV
d) IV only
e) None of the above
