6 Physical Chemistry 6.6 Electro Chemistry
Determination of Faraday's constant
P3062101
Correlation between the transferred charge and the evolved volumes of hydrogen and oxygen in the electrolysis of diluted sulphuric acid (T = 296.05 K and p =100.4 kPa).
Principle
Electrolysis apparatus-Hofmann
Faraday's laws of electrolysis describe the correlation between the amounts of substances transformed in the reactions at the electrodes and the charge applied (amount of electricity). Faraday's constant, which appears as a proportionality factor, can be determined experimentally from the dependence. Tasks Determine Faraday's constant from the dependence of the volumes of hydrogen and oxygen envolved on the charge applied in the hydrolysis of dilute sulphuric acid. What you can learn about ▪ ▪ ▪ ▪ ▪
Electrolysis coulometry Charge Faraday's laws Avogadro's number General equation of state for ideal gases
Main articles Power supply, universal Electrolysis apparatus-Hofmann Weather monitor, 6 lines LCD Digital multimeter 2010 On/off switch Retort stand, h = 750 mm Set of Precision Balance Sartorius CPA 623S and measure software, 230 V
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Function and Applications Electrolysis apparatus-Hofmann. Equipment and technical data ▪ ▪ ▪ ▪
Electrolysis apparatus-Hofmann 2 communicating glass tubes, l = 510 mm Measuring range: 50 ml Graduation: 0.2 ml
44518-00
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