electrochemical cells

Question 1

what is used to measure how easily a metal is oxidised

Answer 1

• electrode potentials

if it’s easily oxidised it will have a very negative potential

Question 2

what is equation for cell potential

Answer 2

right-left

Question 3

what is a standard hydrogen electrode used for

Answer 3

measuring the electrode of a half cell

Question 4

what is the function of the platinum electrode?

Answer 4

to allow transfer of electrons

Question 5

what are the conditions for a standard electrode potential

Answer 5

298k 100kPa and 1.00 mol/dm^3 solution of ions

Question 6

what is the half equation in a positive electrode of a lithium cell

Answer 6

Li+ + CoO2 + e– → Li+[CoO2]–

Question 7

what is the half equation at the negative electrode of a lithium cell

Answer 7

Li → Li+ + e–

Question 8

what is the function of fuel cells

Answer 8

they are used to generate an electric current and don’t need to be recharged

Question 9

what is the function of a salt bridge

Answer 9

to allow ions to flow between the two half cells

completing the circuit