Ch.2 - Tools of the TradeWorksheetSee all chapters
All Chapters
Ch.1 - Chemical Measurements
Ch.2 - Tools of the Trade
Ch.3 - Experimental Error
Ch.4 + 5 - Statistics, Quality Assurance and Calibration Methods
Ch.6 - Chemical Equilibrium
Ch.7 - Activity and the Systematic Treatment of Equilibrium
Ch.8 - Monoprotic Acid-Base Equilibria
Ch.9 - Polyprotic Acid-Base Equilibria
Ch.10 - Acid-Base Titrations
Ch.11 - EDTA Titrations
Ch.12 - Advanced Topics in Equilibrium
Ch.13 - Fundamentals of Electrochemistry
Ch.14 - Electrodes and Potentiometry
Ch.15 - Redox Titrations
Ch.16 - Electroanalytical Techniques
Ch.17 - Fundamentals of Spectrophotometry
BONUS: Chemical Kinetics
Safety & Labels
Thermal Dependency
Volumetric Instruments
Filtration & Evaporation
Thermal Expansion 

Concept #1: Temperature can have an adverse effect on determing the true mass or volume of a solution. 

Example #1: Massachusetts limits the amount of lead in drinking water to 219 ppb. a) Express this total in molarity. b) What will happen to the molarity of the solution as the temperature increases: will it increase, decrease or remain constant? 

Thermal Expansion Calculations

Example #2: If a 0.02135 M aqueous solution is prepared at 21oC (d = 0.9979955 g/mL) what is the new concentration if the same experiment is performed a month later when the temperature is now 26 oC (d = 0.9967867 g/mL)? 

Practice: The mass of an empty container at 28 oC is 83.93 g. The mass of the container when filled with water from a 25-mL pipet is 108.70 g. Calculate the true volume of delivered water by the calibrated pipet.