Electrode potential

Question 1

Half cell

Answer 1

One half of an electrochemical cell

Can be constructed of a metal dipped in its ion or a platinum electrode with 2 aqueous ions

Question 2

Electrochemical cell

Answer 2

Created by joining 2 different half cells together by wire, voltmeter
and a salt bridge

One side is reducing and the other side is oxidising

Question 3

What happens if there’s 2 metal ions instead of a metal and an ion?

Answer 3

Use a platinum electrode

Question 4

Standard conditions

Answer 4

298k
1moldm-3 of ion
100 kpa

Question 5

Standard hydrogen electrode

Answer 5

Used as a reference to measure standard electron potential

Question 6

How to get 1 moldm-3 of H+ ions

Answer 6

Use 1 moldm-3 of HCl or 0.5 moldm-3 of H2SO4

Question 7

Electrode potential

Answer 7

Write equations in reduced form

One cell reduced and the other oxidised

Work out which is being reduced and which is being oxidised

Question 8

NO PRoblem

Answer 8

Negative oxidised

Positive reduced

Question 9

Salt bridge

Answer 9

Filter paper turned into a strip and saturated in KNO3

Allows ions to flow through