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Author Topic: Reaction question (Acids and cadmium)  (Read 5331 times)

Offline Garabato

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Reaction question (Acids and cadmium)
« on: 14/09/2007 07:01:24 »
Hi

I would like to know what these reations produce, and wether it reactes or not please; I hope someone can help me out in this.

Is just the reaction of some acids with Cadmium.

HNO4 + Cd  ------->

H2SO4 + Cd -------->

HCLO4 + Cd -------->

Thank you lots

Moderator: Clarified thread title.
« Last Edit: 15/09/2007 17:52:36 by another_someone »


 

Offline lightarrow

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Re: Reaction question (Acids and cadmium)
« Reply #1 on: 14/09/2007 12:47:17 »
Hi

I would like to know what these reations produce, and wether it reactes or not please; I hope someone can help me out in this.

Is just the reaction of some acids with Cadmium.

HNO4 + Cd  ------->

H2SO4 + Cd -------->

HClO4 + Cd -------->

Thank you lots

HNO4 doesn't exist.
H2SO4 + Cd --------> Cd2+ + H2
HClO4 + Cd --------> I don't know because usually HClO4 doesn't act as oxydant, unless is concentrated, so the answer should depend on concentration.
« Last Edit: 23/03/2009 16:23:26 by lightarrow »
 

Offline Garabato

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Re: Reaction question (Acids and cadmium)
« Reply #2 on: 14/09/2007 17:44:41 »
Opps, I ment HNO3, sorry.

And thanks alot.
 

Offline DrDick

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Re: Reaction question (Acids and cadmium)
« Reply #3 on: 14/09/2007 17:53:51 »
Hi

I would like to know what these reations produce, and wether it reactes or not please; I hope someone can help me out in this.

Is just the reaction of some acids with Cadmium.

HNO4 + Cd  ------->

H2SO4 + Cd -------->

HCLO4 + Cd -------->

Thank you lots

HNO4 doesn't exist.
H2SO4 + Cd --------> Cd2+ + H2
HCLO4 + Cd --------> I don't know because usually HCLO4 doesn't act as oxydant, unless is concentrated, so the answer should depend on concentration.

It doesn't matter whether it's HClO4 or not.  H+ will oxidize Cd (and many other metals), whether it's from nitric acid, sulfuric acid, perchloric acid or even acetic acid.

Dick
 

Offline lightarrow

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Re: Reaction question (Acids and cadmium)
« Reply #4 on: 15/09/2007 01:25:56 »
It doesn't matter whether it's HClO4 or not.  H+ will oxidize Cd (and many other metals), whether it's from nitric acid, sulfuric acid, perchloric acid or even acetic acid.

Dick

Ok, but H2↑ it's not produced if ClO4- acts as oxydizing.

Example with Zn and diluted HNO3:

HNO3 + 4Zn +8H+ -->  4Zn2+ + NH3↑ + 3H2O.

Maybe Cd will react in this same way with HNO3 (Cd has similar chemical properties of Zn), but I'm not sure because Cd is less reducing than Zn, so it's possible it will react producing NO instead of NH3, like in the case of Cu:

3Cu + 8HNO3  -->  3Cu(NO3)2 + 2NO + 4H2O.
« Last Edit: 15/09/2007 11:55:04 by lightarrow »
 

Offline Bored chemist

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Re: Reaction question (Acids and cadmium)
« Reply #5 on: 15/09/2007 17:50:56 »
I thunk that cadmium is used in analytical chemistry to reduce nitrate to nitrite. Of course the products will also depend on the concentration and temperature.
 

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Re: Reaction question (Acids and cadmium)
« Reply #5 on: 15/09/2007 17:50:56 »

 

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