Unit 1- Section 11- Electrochemistry Flashcards
1
Q
How many half cells does a cell contain?
A
two
2
Q
In a cell, how are the half cells connected?
A
by a salt bridge
3
Q
What is a simple half cell composed of?
A
- a metal (acts an electrode)
- solution of compound (containing the metal)
4
Q
What happens when two half cells are connected in a circuit?
A
a voltage will be produced
5
Q
why is a voltage formed in a zinc- copper cell?
A
because the zinc has a higher tendency to oxidise to the Zn2+ ion and release electrons than the copper half cell.
6
Q
Out of copper and zinc, which electrode will the electrons build up on more?
A
the zinc electrode, it has a higher tendency to oxidise
7
Q
why is a high resistance voltmeter used?
A
to measure the maximum potential difference
8
Q
A
