Ch.16 - Aqueous Equilibrium WorksheetSee all chapters
All Chapters
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
Ch.5 - Gases
Ch.6 - Thermochemistry
Ch.7 - Quantum Mechanics
Ch.8 - Periodic Properties of the Elements
Ch.9 - Bonding & Molecular Structure
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
Problem

Hydrazine (NH2NH2) has a Kb = 3.0 x 10-6. If 100.0 mL of a 0.5000 M aqueous hydrazine solution is mixed with 100.0 mL of 0.5000 M aqueous hydrochloric acid, the resulting solution will have a pH

a. pH > 7

b. pH < 7

c. pH = 7

Solution

We are being asked to determine if the pH is less than, greater than or equal to 7 when 100.0 mL of a 0.5000 M NH2NHis mixed with 100.0 mL of 0.5000 M HCl

Upon inspection, NH2NHappears to be a weak base (amines are weak bases) while HCl is a strong acid

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