Final answer:
No, hydrogen gas is not released at the cathode during the electrolysis of aqueous copper sulfate solution with copper electrodes; instead, copper is deposited on the cathode. Hydrogen gas is typically produced during electrolysis when inert electrodes and reactive metals like sodium are involved.
Step-by-step explanation:
The assertion that hydrogen gas is released at the cathode during the electrolysis of aqueous copper sulfate solution using copper electrodes is false. When copper electrodes are used, copper ions are reduced to copper metal at the cathode. The reduction reaction that takes place is Cu2+ + 2e- → Cu (s), leading to the deposition of copper on the cathode, not the evolution of hydrogen gas.
Hydrogen is produced at the cathode during the electrolysis of water, which involves the reduction of water molecules, under conditions where more reactive metals like sodium are present and cannot be reduced. This scenario typically includes inert electrodes and the presence of an electrolyte like H2SO4. However, since copper is less reactive and does not impede the deposition of copper at the cathode, the evolution of hydrogen gas in this specific case with copper electrodes is not accurate.