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

A student needs to identify whether a small cell uses a metal/metal-ion redox pair or a fuel cell using H2/O2. Which simple observation would indicate the cell is a fuel cell (H2/O2)?

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

Which of the following is a correct disadvantage of fuel cells compared with conventional internal combustion engines?

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

A student connects two identical cells in series. What happens to the total emf and the available current (assuming internal resistances are small)?

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 statement about internal resistance in a cell is true?

In a fuel cell using an alkaline electrolyte, which ions move through the electrolyte from the cathode to the anode?

What happens to the cell potential if the concentration of the oxidised species at the cathode is increased (all else constant)?

Which statement about fuel cells is correct?

Standard hydrogen electrode (SHE) is used as the reference electrode with potential defined as 0.00 V. Which half-reaction is used for SHE?