chemistry - electrode potentials

what is the function of a platinum electrode?

it allows the transfer of electrons

what are the standard conditions for this electrode?

• 1moldm^-3

• 298K

• 100KPa

• Refer to the specific species mentioned in the questions

State the main environmental advantage of using a hydrogen-oxygen fuel cell to power a car

Water is the only product

Suggest why the use of a hydrogen-oxygen fuel cell might not be carbon neutral

• Carbon dioxide is released because fossil fuels are burned to produce electricity to generate hydrogen

If there are two solutions with the same species, why might they have a different electrode potential?

The concentrations are different

Why does the EMF decrease to 0V over time?

The ions in the two solutions become the same

Suggest why the actual EMF value is different from the calculated value

It is not done under standard conditions

What change needs to be made to an apparatus for the cell reaction to go to completion?

Replace the voltmeter with a lamp

State the meaning of the term electrochemical series

A list of electrode potentials in numerical order