Electrode potentials and fuel cells - 1

Question 1

Standard electrode potentials that are more negative are more likely to…

Answer 1

loose electrons therefor be oxidised

Question 2

cell potential formula

Answer 2

most positive - most negetive

Question 3

advantages of fuel cells for energy

Answer 3

only H20 formed so not polluting

greater efficiency

Question 4

disadvantages of fuel cells for energy

Answer 4

H2 is difficult to store
H2 difficult to manufacture initially
limited life cycle of H2 absorber

Question 5

define standard electrode potential

Answer 5

the potential difference of electrochemical cell comprising of a [cu/cu2+] (WHATEVER IS IN QUESTION) half cell combined with a standard hydrogen electrode
1atm/ 1moldm-3 / 298K

Question 6

What do you need to measure standard electrode potential?

Answer 6

saltbridge
voltmeter
platinum electrode dipping into 1moldm-3 H+
hydrogen gas feed