September 30, 2020, 09:36:57 PM
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Topic: Direction of the charge carried by a anion on a galvanic cell?  (Read 168 times)

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Offline AussieKenDoll

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Direction of the charge carried by a anion on a galvanic cell?
« on: September 02, 2020, 02:06:00 PM »
This is a galvanic cell with two carbon rods.  See the attached image .
There is a Cl- ion which has a transport number of 0.5 and it carries 0.45 A through the Tube A which has 0.9 A current, what is direction of the charge carried by the anion?

I know that Current flows from positive to negative terminal on the cell and also electrons flow from negative to positive terminal.

Does the ammeter reading indicate the current through both tube A and tube B?
« Last Edit: September 02, 2020, 02:21:49 PM by AussieKenDoll »

Offline chenbeier

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Re: Direction of the charge carried by a anion on a galvanic cell?
« Reply #1 on: September 02, 2020, 02:30:01 PM »
In den drawing is the Anode, positive Electrode on right Side marked with Y. To this Rod the negative chloride ions will travel. The amperemeter only shows the current direction., which is opposite to electron movement.

Offline AussieKenDoll

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Re: Direction of the charge carried by a anion on a galvanic cell?
« Reply #2 on: September 02, 2020, 02:32:29 PM »
In den drawing is the Anode, positive Electrode on right Side marked with Y. To this Rod the negative chloride ions will travel.

Yeah i figured it out, that X is Cathode and Y is anode, and Chloride ions attract to anode.

Does the ammeter reading indicate the current through both tube A and tube B?

Offline chenbeier

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Re: Direction of the charge carried by a anion on a galvanic cell?
« Reply #3 on: September 02, 2020, 02:36:52 PM »
The amperemter shows the summery of ampere, which go through both tubes. It is like two resistors connected parallel.

Offline mjc123

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Re: Direction of the charge carried by a anion on a galvanic cell?
« Reply #4 on: September 03, 2020, 04:36:35 AM »
What you have drawn is an electrolytic cell, not a galvanic cell. You have an external battery driving current through the cell and forcing a chemical reaction. In a galvanic cell, a reaction in the cell generates an electric current which passes through a load (resistance) in the external circuit.
In a galvanic cell, the cathode is the positive electrode and the anode is the negative electrode.
In an electrolytic cell, the anode is the positive electrode and the cathode is the negative electrode.
But in both, oxidation takes place at the anode and reduction takes place at the cathode.

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