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14.15.c

Posted: Sun Feb 18, 2018 11:59 pm
by Angel Ni 2K
For this question, the overall equation is given as Cd(s) + 2 Ni(OH)3(s) --> Cd(OH)2(s) + Ni(OH)2(s). However, in the cell diagram, there was a KOH. Where did the potassium come from?

Re: 14.15.c

Posted: Mon Feb 19, 2018 8:19 am
by Vincent Chiang 1L
The KOH is there as a salt bridge to allow for flow of ions.

Re: 14.15.c

Posted: Mon Feb 19, 2018 11:26 pm
by Paula Dowdell 1F
How do we know that this salt bridge is necessary?