2.7 Electrolysis Flashcards
What is the name that is given to the positive electrode?
Anode
Why can’t ionic solids conduct electricity?
Because the ions aren’t free to move
Which ions form at the cathode?
The least reactive ones
What does (aq) mean?
Aqueous solution
Is it oxidation or reduction when electrons are lost?
Oxidation
What is the solution or melt that is electrolysed called ?
Electrolyte
What does OIL RIG stand for?
Oxidation Is Loss Reduction Is Gain
The products formed during the electrolysis of sulfuric acid are?:
Hydrogen at the negative electrode and oxygen at the positive electrode.
Why does the solution have to be molten?
So it is easier to move
The acronym “OIL RIG” means what?
Oxidation Reduction
Is Is
Loss Gain
What is the balanced half-equation for the production of chlorine gas?
2Cl- → Cl2 + 2e-
What is OILRIG
Oxidation Is Loss Reduction Is Gain
What is the definition of electrolysis?
If you pass an electric current through an ionic substance that’s molten or in solution. It breaks down into the elements it’s made of.
What does PANIC stand for?
Positive Anode Negative Is Cathode
What is the positive electrode called
Anode
What is the negative electrode
Cathode
What is an anode?
A positive electrode
Why doesn’t solid copper chloride conduct electricity?
The ions can not move around when solid, it needs to be aqueous
Was does the acronym OILRIG stand for?
Oxidation Is Lost Reduction Is Gained
Name one method of mining
Phytomining
Bioleaching
What are ions?
Charged atoms
Are non metals negative or positive ?
Negative
Where do positive ions go?
The negative electrode
Where do the negative ions go?
The positive electrode
What happens to the positive electrode?
It is oxidised
What is the name of the negative electrode?
Cathode
Which ions are attracted towards the cathode?
Positive ions
How does phytomining work?
Plants are grown on top of a source of copper compounds, which the plants absorbs with its roots: at the end of this process, the plants are burned to obtain the copper compounds.
