Linked Questions

1
vote
0answers
85 views

Electrolysis of brine with filter paper bridge [duplicate]

What would be the problem with connecting the two dishes up with a piece of metal wire?
2
votes
0answers
46 views

A galvanic cell with a salt bridge for demonstration purposes (high school) [duplicate]

I want to design a meaningful galvanic cell experiment for my high school science class. I am tempted to do an experiment without a salt bridge. Why? Because the most common batteries (i.e. lead ...
29
votes
5answers
10k views

Why don't the electrons move through the electrolyte (instead of the circuit) in a galvanic cell?

I was learning about galvanic cells and I had a problem understanding why electrons do not travel through the electrolyte solutions themselves, instead preferring to travel through metals. Can ...
4
votes
2answers
14k views

Explanation for the reactions in a saltwater battery with zinc and copper electrodes

I am a physicist, not a chemist. I'm trying to get a basic understanding of the reactions taking place in a battery using a saltwater electrolyte with copper and zinc terminals. I'm writing a general ...
4
votes
3answers
13k views

Why do Electrons leave the Zinc in a Galvanic Cell

What induces electrons to leave the atoms around the part of the zinc metal in a solution to travel up along that zinc metal and above the solution, through the wire and to the copper metal and ...
4
votes
2answers
26k views

Why use a salt bridge at all in an electrochemical cell?

I was reading about electrochemical cells and I really don't understand why a salt bridge is needed. Can't you just combine the solutions? I've found a lot of webpages explaining electrochemical cells ...
3
votes
2answers
5k views

What causes electrons to move from zinc to copper?

Here is something that no video in youtube about electrochemistry can explain me about galvanic cells. Suppose we have $\ce{Zn}$ metal immerse in $\ce{Zn^{2+}}$ in one side, then $\ce{Cu}$ metal ...
5
votes
2answers
443 views

Formation of species in electrolysis

I understand the principles of electrolysis of salts in aqueous solutions, but there are two points on which i am unsure. At the positive electrode, how can you work out which ions will ...
1
vote
1answer
154 views

Replacing Salt Bridge with Platinum Sheet

What would happen, if in a galvanic cell, the salt bridge is replaced by an inert platinum sheet? Would charges accumulate on the sheet? Would the cell still work, and produce less emf than earlier, ...
0
votes
0answers
188 views

What is the purpose of the solution in a galvanic cell?

In other words: What is the purpose of the solution that the electrodes are immersed in, in a galvanic cell, and is it possible to generate a current without any solution?
0
votes
1answer
88 views

Direct connection in a zinc copper battery [closed]

Why can't you just hook up a piece of wire between a piece of zinc and copper and get an electric current? What is it about the electrolyte that makes zinc give up electrons? Also, why will the lack ...
2
votes
1answer
82 views

What are good examples of questions that make college students think about chemistry concepts? [closed]

I am teaching the second semester of general chemistry at the college level. The course tends to get bogged down in calculations, and sometimes we forget about the big picture and what is going on at ...