Ch.15 - Acid and Base EquilibriumWorksheetSee all chapters
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Ch.1 - Intro to General Chemistry
Ch.2 - Atoms & Elements
Ch.3 - Chemical Reactions
BONUS: Lab Techniques and Procedures
BONUS: Mathematical Operations and Functions
Ch.4 - Chemical Quantities & Aqueous Reactions
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Ch.10 - Molecular Shapes & Valence Bond Theory
Ch.11 - Liquids, Solids & Intermolecular Forces
Ch.12 - Solutions
Ch.13 - Chemical Kinetics
Ch.14 - Chemical Equilibrium
Ch.15 - Acid and Base Equilibrium
Ch.16 - Aqueous Equilibrium
Ch. 17 - Chemical Thermodynamics
Ch.18 - Electrochemistry
Ch.19 - Nuclear Chemistry
Ch.20 - Organic Chemistry
Ch.22 - Chemistry of the Nonmetals
Ch.23 - Transition Metals and Coordination Compounds

Solution: Of the following list of molecules and ions, which can behave as Lewis bases: CO3-2, NH4+, Na+, OH-?  (i) NH4+ only (ii) NH4+ and OH- (iii) CO3-2 and Na+ (iv) CO3-2 and OH- (v) OH- only

Problem

Of the following list of molecules and ions, which can behave as Lewis bases: CO3-2, NH4+, Na+, OH-?  

(i) NH4+ only 

(ii) NH4+ and OH- 

(iii) CO3-2 and Na+ 

(iv) CO3-2 and OH- 

(v) OH- only

Solution

Lewis bases are electron donors which usually have lone pair of electron or a negative charge 

(i) NH4+ only (Incorrect, no lone pairs or negative charge)

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