Electrode Potential Flashcards
1
Q
What does a more negative value mean?
A
More likely to be oxidised
2
Q
Why is platinum used?
A
Unreactive
Good electrical conductor
3
Q
What is the salt bridge?
A
Soaked in ionic solution (eg KNO3)
It allows ions to move and completes the circuit
4
Q
Why does voltmeter have a high resistance?
A
To give the highest voltage possible (records emf)
5
Q
In the conventional cell representation what is on the left?
A
More negative electrode potential, the oxidation
6
Q
Where does hydrogen go in conventional cell representation?
A
Always left
7
Q
What are standard conditions for hydrogen standard cell thing?
A
298K
100kPa
conc. of solutions 1moldm-3
8
Q
What is the problem when standard conditions aren’t used with hydrogen?
A
The other value is no longer comparable as hydrogen value no longer the standard
