concentrated NaCl and Na will deposit at cathode in concentrated solution? i tot Na will only deposit when in molten state?
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Biology; Chemistry; Physics: Post your doubts here!
- Thread starter scouserlfc
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No in molten and in concerntrated Na will deposit at cathode!
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Na will be deposited at the cathode only in molten form! Not in aqueous conditions ( whether conc. or dil.) The confusion was about the products at the anode. Not at the cathode.
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Wrong, Na only deposits if its molten NaCl dude.
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the one that is less reactive is discharged...so Na will NOT be discharged...
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Dude, you totally screwed up your concepts..
only molten dude... i just find one question about this in may/june 2008 Q3(d)...
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The solution was replaced by a dilute solution of an acid. Suggest which acid would
produce the same gases as those produced with concentrated aqueous sodium
chloride.
I know HCl is the only possibility but how could DILUTE HCl give out chlorine at anode and not Oxygen? D:
produce the same gases as those produced with concentrated aqueous sodium
chloride.
I know HCl is the only possibility but how could DILUTE HCl give out chlorine at anode and not Oxygen? D:
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Sorry fellows, only in Molten!
But i know i'm guaranteed right in aqueous being dilute! no question on that!
Nothing like screwing up my concepts, open the book and the p.p i referred to!
But i know i'm guaranteed right in aqueous being dilute! no question on that!
Nothing like screwing up my concepts, open the book and the p.p i referred to!
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What a Disaster!
Hope everyone comes on top of the exam!
Stop the concerntration and dilute arguing!
Accept anything you like!
Lets see who gets what right in the end!
Hope everyone comes on top of the exam!
Stop the concerntration and dilute arguing!
Accept anything you like!
Lets see who gets what right in the end!
NO! correct answer is only thing i going to accept!What a Disaster!
Hope everyone comes on top of the exam!
Stop the concerntration and dilute arguing!
Accept anything you like!
Lets see who gets what right in the end!
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Here it is: Aqueous is aqueous, unless stated dilute or concentrated. In case of NaCl, It's always concentrated. Got thaT?
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impurities increase Boiling point and decrease melting point . Correct ?
normally, yup...
how about this?
The solution was replaced by a dilute solution of an acid. Suggest which acid would
produce the same gases as those produced with concentrated aqueous sodium
chloride.
answer is HCl... in dilute HCl, OH is being discharge instead of Cl? but why the answer is HCl?
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That's what's my question -_-
i found some answer to this question... but i dont understand it... can someone explain what is o3H+?
1)Diluted HCl contains Cl- anions and H3O+ cations, and just these ions migrate to electrodes. OF course you can also take into account a very small amount of OH- anions (but they are diminished by an equilibrium Kw=[H3O+][OH-]).
Also, this may depend on the voltage used.
The major products of electrolysis should be H2 and Cl2
2)chlorine ions have a greater negative elctrode potential than hydroxide ions by a quite high degree, to the extent that a small concentration of Cl- anions will be displaced preferentially to hydroxide ions.
1)Diluted HCl contains Cl- anions and H3O+ cations, and just these ions migrate to electrodes. OF course you can also take into account a very small amount of OH- anions (but they are diminished by an equilibrium Kw=[H3O+][OH-]).
Also, this may depend on the voltage used.
The major products of electrolysis should be H2 and Cl2
2)chlorine ions have a greater negative elctrode potential than hydroxide ions by a quite high degree, to the extent that a small concentration of Cl- anions will be displaced preferentially to hydroxide ions.
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I guess in aqueous solutions containing Cl- and OH-, Cl- always discharges !i found some answer to this question... but i dont understand it... can someone explain what is o3H+?
1)Diluted HCl contains Cl- anions and H3O+ cations, and just these ions migrate to electrodes. OF course you can also take into account a very small amount of OH- anions (but they are diminished by an equilibrium Kw=[H3O+][OH-]).
Also, this may depend on the voltage used.
The major products of electrolysis should be H2 and Cl2
2)chlorine ions have a greater negative elctrode potential than hydroxide ions by a quite high degree, to the extent that a small concentration of Cl- anions will be displaced preferentially to hydroxide ions.
correct me if im wrong.