[clint476]

Anyone got any idea how to answer part b)??
I´m stumped

6.   A current of 3A is passed for 3 hours through a solution of copper II sulphate (using copper electrodes).

   (a)   Write ionic equations to show what happens at the (i) anode (ii) cathode.         [2]

   (b)   Calculate the changes in mass of the cathode and anode stating whether a gain or loss.  (Show working)      [4]

[Borek]

Google Faraday's law of electrolysis. You know that charge is

q = i*t?

[clint476]

Hi Borek,
            Thanks for your reply!!
        I can calculate Q from the equation which will give me the number of coulombs of charge but how do i convert this to the mass of copper collected at the cathode, and lost at the anode??

[Borek]

Reread my previous post.

[clint476]

Thanks Borek. Good old faraday and his 96500C per mole!!

[Borek]

Thanks Borek. Good old faraday and his 96500C per mole!!

Just don't forget about n.