Topic 4 Electrolysis of aqueous solutions Flashcards
1
Q
What will be formed at the cathode is hydrogen is present and the metal is more reactive than hydrogen
A
Hydrogen
2
Q
What will be produces hydrogen is present and the metal is less reactive than hydrogen
A
Pure metal will be produced
3
Q
What happens if A halide is present
A
It will be produced at the anode
4
Q
How to test for carbon dioxide
A
Bubbled through limewater turn cloudy present
5
Q
How to test for chlorine
A
Chlorine bleaches damp litmus paper red and then white
6
Q
How to test for hydrogen
A
Makes the squeaky pop with a lighted splint
7
Q
How to test for oxygen
A
Will relight a glowing splint
8
Q
What do half equation show
A
Reactions of the electrodes
9
Q
Negative electrode half equation always forms
A
An element
10
Q
Half equation at the positive electron forms
A
A element + electrons
