Question

The following data was obtained for Part B of the lab:

Mass of Cu before electrolysis = 20.6133 g

Mass of Cu after electrolysis = 20.4697 g

Time of electrolysis = 514 sec

Average current = 0.85 Amp

Volume of gas collected = 55.6 mL

Atmospheric pressure (corrected to standard conditions) = 758.4 mmHg

Room temperature = 19.2 °C

Vapour pressure of water at 19.2 °C = 16.7 mmHg

Using this data determine:

Moles of Cu consumed:

Moles of H₂ produced:

Experimental value of Faraday’s constant based on Cu consumed:

Experimental value of Avogadro’s number using the charge of one electron (1.602 x 10^-19 C):

Answer 1