• Best of luck to the class of 2024 for their HSC exams. You got this!
    Let us know your thoughts on the HSC exams here
  • YOU can help the next generation of students in the community!
    Share your trial papers and notes on our Notes & Resources page

Quick question about salt bridges (1 Viewer)

blackness

Crazy crazy just crazy
Joined
Feb 25, 2007
Messages
40
Location
Livo
Gender
Male
HSC
2007
Why do we use KNO3 salt bridges, what would happen if we used a different type of salt bridge???????

Thanls
 

brenton1987

Member
Joined
Jun 9, 2004
Messages
249
Gender
Undisclosed
HSC
N/A
Potassium Nitrate is used because both potassium and nitrate salts are soluble with a large number of other anions and cations. It means you dont have salts precipitating out of solution in your cell.
You could use any soluble salt so long as it doesnt precipitate when it comes into contact with the other ions.
 

xiao1985

Active Member
Joined
Jun 14, 2003
Messages
5,704
Gender
Male
HSC
N/A
Also, K+ NO3- are unlikely to be oxide and reduce
 

jlnWind

Member
Joined
Sep 13, 2006
Messages
50
Gender
Male
HSC
2007
blackness said:
Why do we use KNO3 salt bridges, what would happen if we used a different type of salt bridge???????

Thanls
Brenton said it all, don't forget to specifically mention that they cannot react with the electrolyte solutions because it disrupts the galvanic cell's processes.
 

Users Who Are Viewing This Thread (Users: 0, Guests: 1)

Top