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Ch.15 - Acid and Base EquilibriumWorksheetSee all chapters

# Bases

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Sections
Acids Introduction
Bases Introduction
Binary Acids
Oxyacids
Bases
Amphoteric Species
Arrhenius Acids and Bases
Bronsted-Lowry Acids and Bases
Lewis Acids and Bases
The pH Scale
Auto-Ionization
Ka and Kb
pH of Strong Acids and Bases
Ionic Salts
pH of Weak Acids
pH of Weak Bases
Diprotic Acids and Bases
Diprotic Acids and Bases Calculations
Triprotic Acids and Bases
Triprotic Acids and Bases Calculations
Conjugate Acids and Bases

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 bases would more greatly favor the product side of a chemical reaction?

a) BeH2                         b) H2Se                         c) SrH2                          d) Pb(OH)4                    e) HF

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