Solutions : Ion Concentrations
Predict the mass of copper consumed in a single replacement reaction.
The lowest conductivity occurs at the equivalence point of the barium hydroxide and the sulfuric acid.
Lab Summary
In this lab, you will use a PASPORT Conductivity Sensor and Drop Counter to titrate a barium hydroxide solution of unknown concentration with a sulfuric acid solution of known concentration. You will use your data and the stoichiometry of the reaction to determine the concentration of the barium hydroxide solution
Downloads
- Download Free Lab (PDF, 332 KB) (329 KB, .pdf)
(student version)
Method
Use a conductivity sensor and drop counter to titrate a Barium hydroxide solution of unknown concentration with a Sulfuric acid solution of known concentration. You will use your data and the stoichiometry of the reaction to determine the concentration of the Barium hydroxide solution.
Here's What You Need
U.S. Educator prices shown.
Probeware
PASPORT Conductivity Sensor (PS-2116A) - $110
Utilizes platinum probes for greater range and improved accuracy in high & low concentrations.
PASPORT High Accuracy Drop Counter (PS-2117) - $99
Is a professional drop counter that allows students to capture detailed titration data. For use with PASPORT Interfaces.
Xplorer GLX (PS-2002) - $349
The Xplorer GLX is a data collection, graphing, and analysis tool designed for science students and educators.
Other Products
Ohaus Scout Pro Balance 400g (SE-8756A) - $479
Ideal for the student science lab and can now be connected to DataStudio. This is the 400 g version.
Small Tripod Base and Rod (SE-9451) - $24
The steel rod is 9.5 mm (3/8 in.) in diameter and 50 cm long.
Buret Clamp (SE-9446) - $12
The V-shaped, plastic-coated jaws will gently hold a buret and lock at any angle.
Right Angle Clamp (SE-9444) - $16
This clamp fits rods up to 18 mm (11/16 in) in diameter.
Magnetic Stirrer (SE-7700) - $98
A "must-have" piece of lab equipment when doing titration experiments.
Other Materials
- Graduated cylinder, 100-mL
- Beaker, 150-mL
- Buret, 50-mL
- Pipet with bulb, 50-mL
- Wash bottle and waste container
- Barium hydroxide (Ba(OH)2, unknown concentration
- 0.02 M Sulfuric acid (H2SO4)
- Water, distilled
