A2: Electrode potentials

Question 1

Define a voltaic cell

Answer 1

A type of electrochemical cell that converts chemical energy into electrical energy

Question 2

Define a half cell

Answer 2

Contains the chemical species present in a redox half equation

Question 3

Standard electrode potential

Answer 3

The EMF of a half cell connected to a standard hydrogen half cell under standard conditions

Question 4

More reactive metal is the _ electrode

Answer 4

negative (loses electrons and is oxidised)

Question 5

Less reactive metal is the _ electrode

Answer 5

positive (gains electrons and is reduced)

Question 6

What should you use for a salt bridge

Answer 6

filter paper soaked in KNO3