The Use of Probes in the Chemistry Laboratory
January 3, 2008
SFUSD Professional Development Workshop [Feb. 2008]
value of probe use (”Pasco advertisment“)
SFUSD probe loan program book review: Inquiry-based Experiments for Chemistry
Data Studio download [free] tutorials: determination of the inflection point using Data Studio and regression analysis using MS Excel calibration of the colorimeter and pH meter
practice probe use: heat of fusion of ice (temperature); Boyle’s law (pressure); Beer’s law (colorimeter); acid-base titration (pH)
labs using probes
temperature
- Determination of the molar mass of a gas based on the Dumas method
- Determination of enthalpy of a reaction using Hess’ law
- Determination of molar mass using boiling point elevation
pressure
colorimeter
- Beer’s law: determination of [Cu2+]
- Reaction stoichiometry
- Determination of a rate law
- Determination of Kc (equilibrium constant) [under development]
pH
- acid-base titration: comparison of end point vs. equivalence point
- Determination of Ka, acid dissociation constant, of acetic acid , based on the Henderson-Hasselbach equation
