Ionization of Zinc in galvanic cells

AI Thread Summary
In a galvanic cell, such as the Daniell cell, zinc atoms ionize to form Zn²⁺ ions and release two electrons when the circuit is closed. This ionization occurs due to the electrochemical potential difference between the zinc and copper electrodes, driving the oxidation of zinc. When the circuit is open, the flow of electrons ceases, halting the ionization process. In the copper half-cell, a reduction reaction takes place where Cu²⁺ ions gain electrons from the external circuit, completing the charge transfer between the two half-cells. This interplay of oxidation at the zinc electrode and reduction at the copper electrode is fundamental to the operation of the galvanic cell.
B4ssHunter
Messages
178
Reaction score
4
what exactly ionizes zinc in the galvanic cell or the daniell cell ?
i mean zinc atoms in the galvanic cell are ionized into Zn ++ and 2 e- .
then the electrons move through the conductor to the copper bar , my question is why does zinc ionize when connected in a battery ? when the circuit is turned off , the ionization stops , why's that ?
 
Chemistry news on Phys.org
What happens in the other half cell?
 
it is forced to be reduced i suppose
 
So there is a charge transfer between both half cells?
 
I want to test a humidity sensor with one or more saturated salt solutions. The table salt that I have on hand contains one of two anticaking agents, calcium silicate or sodium aluminosilicate. Will the presence of either of these additives (or iodine for that matter) significantly affect the equilibrium humidity? I searched and all the how-to-do-it guides did not address this question. One research paper I found reported that at 1.5% w/w calcium silicate increased the deliquescent point by...
I was introduced to the Octet Rule recently and make me wonder, why does 8 valence electrons or a full p orbital always make an element inert? What is so special with a full p orbital? Like take Calcium for an example, its outer orbital is filled but its only the s orbital thats filled so its still reactive not so much as the Alkaline metals but still pretty reactive. Can someone explain it to me? Thanks!!
I'm trying to find a cheap DIY method to etch holes of various shapes through 0.3mm Aluminium sheet using 5-10% Sodium Hydroxide. The idea is to apply a resist to the Aluminium then selectively ablate it off using a diode laser cutter and then dissolve away the Aluminium using Sodium Hydroxide. By cheap I mean resists costing say £20 in small quantities. The Internet has suggested various resists to try including... Enamel paint (only survived seconds in the NaOH!) Acrylic paint (only...
Back
Top