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

Solution: Rainwater is slightly acidic due to dissolved CO 2. Use the following data to calculate the pH of unpolluted rainwater at 25°C: vol % in air of CO2 = 0.040 vol %; solubility of CO 2 in pure water at 25°C and 1 atm = 88 mL CO2/100. mL H2O; Ka1 of H2CO3 = 4.5 × 10−7.

Problem

Rainwater is slightly acidic due to dissolved CO 2. Use the following data to calculate the pH of unpolluted rainwater at 25°C: vol % in air of CO2 = 0.040 vol %; solubility of CO 2 in pure water at 25°C and 1 atm = 88 mL CO2/100. mL H2O; Ka1 of H2CO3 = 4.5 × 10−7.