SAC Semster 2--> Redox reactions

Question 1

what is an anode

Answer 1

where oxidation occurs, leading to a loss of electrons and a negative charge

Question 2

what is a cathode

Answer 2

where positive cations are attracted to.

Question 3

describe the use of the salt bridge

Answer 3

it’s used to complete the circuit and to make sure electrons are neutral. It also allows anions to move to the anode and cations to move to the cathode.

Question 4

what information does cell voltage give

Answer 4

the strength of the reductant, which is why as the reactants are used up, the voltage will decrease as the flow of electrons also comes to a slow stop.

Question 5

Possible errors of the experiment

Answer 5

if the metal isn’t cleaned therefore not removing any coatings. This could affect the voltage reading and the results.

touching or moving the salt bridge as well as this could effect the flow of electrons from anode to cathode.

Question 6

random errors

Answer 6

happen randomly

Question 7

systematic error

Answer 7

if a measuring machine malfunctions.