Chemical Cells And Fuel Cells (chemistry Only) (GCSE Chemistry)

Which fuel cell type typically requires a platinum catalyst and operates at relatively low temperatures (e.g., ~80 °C)?

Which advantage of a hydrogen fuel cell (using H2 and O2) compared with burning hydrogen in an engine is correct?

A simple electrochemical cell notation is: Zn(s) | Zn2+(aq) || Cu2+(aq) | Cu(s). Which electrode is the cathode?

Which statement about catalyst use in fuel cells is correct?

Which change will increase the voltage measured from a galvanic cell at the same temperature?

In a hydrogen fuel cell using a polymer electrolyte membrane, what is the role of the membrane?

In a galvanic (chemical) cell electrons flow from the anode to the cathode through the external circuit. Which statement describes what happens at the anode?

A student places a voltmeter across a fuel cell and observes 0.65 V under load, but the open-circuit voltage (no load) is 0.75 V. Which is the most likely cause of the 0.10 V difference?

Which property of hydrogen makes it a high specific energy fuel by mass for fuel cells?

Which half-equation correctly represents the oxidation that occurs at the anode in a hydrogen–oxygen fuel cell (acid electrolyte)?

A car fuel cell stack gives lower voltage under heavy load. Which reason explains the drop?