redox

Question 1

is an oxidised metal positive or negative

Answer 1

negative

Question 2

is a reduced metal positive or negative

Answer 2

positive

Question 3

what factors affect electrode potential

Answer 3

changes in temp / conc/pressure

Question 4

what is the standard electrode potential

Answer 4

the voltage measured under standard conditions when the half cell is connected to a standard hydrogen electrode

Question 5

what are the issues with predicting reactions

Answer 5

the reaction kinetics might not be favourable
the conditions might not be standard

Question 6

what are the benefits of electrochemical cells

Answer 6

have High power densities

Question 7

what are the risks of electrochemical cells

Answer 7

chemicals used to make cells are flammable

Question 8

how do fuels cells work

Answer 8

react a fuel with oxygen

Question 9

what is an oxidising agent

Answer 9

accepts electrons is reduced

Question 10

what is a reducing agent

Answer 10

donates electrons and is oxidised