-
Finished your HSC? Check out our University Discussion, Non-School forums or help out next year's HSC students! -
YOU can help the next generation of students in the community! Share your trial papers and notes on our Notes & Resources page
Describe factors that affect an electrolysis reaction (1 Viewer)
- Thread starter Arithela
- Start date
Very quickly:
Increase in concentration of electrolyte = increased rate of electrolysis.
The nature of the concentration... either the ions or the water will be oxidised. To find out, you need to look at the table of standard potentials. REMEMBER that as Cl- and H2O are close together, when a concentrated solution of, say, NaCl, is the electrolyte, Cl- will oxidise in preference to water, whereas in a dilute solution, water will be oxidised.
Electrodes may take part in the reaction and decompose if they are more likely to oxidise than water. Inert electrodes ensure that electrolysis of water occurs.
Increase in concentration of electrolyte = increased rate of electrolysis.
The nature of the concentration... either the ions or the water will be oxidised. To find out, you need to look at the table of standard potentials. REMEMBER that as Cl- and H2O are close together, when a concentrated solution of, say, NaCl, is the electrolyte, Cl- will oxidise in preference to water, whereas in a dilute solution, water will be oxidised.
Electrodes may take part in the reaction and decompose if they are more likely to oxidise than water. Inert electrodes ensure that electrolysis of water occurs.
The concentration of electrolysis (higher concentration= more ions available for transfer= greater rate)
The nature of electrodes (their place in activity series (sp?))
Nature of electrolyte (characteristics of their reactions etc)
The distance between electrode (closer = higher rate)
Applied voltage (if any= obviously more electrolysis)
Surface area of electrode immersed in electrolyte (greater area= greater rate of electrolysis)
These were just summary points let me know if you need any more, a lot of them are self explanitary.
(p.s this time next week chemistry is DONE!!!!!)
The nature of electrodes (their place in activity series (sp?))
Nature of electrolyte (characteristics of their reactions etc)
The distance between electrode (closer = higher rate)
Applied voltage (if any= obviously more electrolysis)
Surface area of electrode immersed in electrolyte (greater area= greater rate of electrolysis)
These were just summary points let me know if you need any more, a lot of them are self explanitary.
(p.s this time next week chemistry is DONE!!!!!)