141. Solving a chemistry problem
Seller: Derkach
Price: 1.20 USD
Available. The final price depends on the selected options and is checked before payment.
Product description
In standard solutions of CdS04 with different activities of Cd2, the electrode potentials of the cadmium-selective electrode were measured relative to the silver chloride electrode:
aCd, mol/L. 1,0*10^-1 1,0*10^-2 1,0*10^-3 1,0*10^-4 1,0*10^-5
—Е, mV 75,0 100 122 146 170
Based on these data, a calibration graph was constructed in the coordinates E - paCd.
The investigated solution of cadmium salt with a volume of 10.00 ml was diluted with water to 50.00 ml in a volumetric flask and the electrode potential of the cadmium-selective electrode was measured in the resulting solution (Ex):
Option 1
—Ex, mV. 94.0
Determine the activity of the test solution of cadmium salt (mol / l).
Additional information
If you do not open the file - install the RAR archiver. Inside the archive you will find a solution in Word format.