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7 answers

Both Michael and Neil's answers are incorrect. This is an acid-base reaction combined with a dissociation reaction.

Note that it is not a redox reaction because no oxidation numbers are changing - Ca is at +2, C is at +4, O is at -2, H is at +1 and Cl is at -1 on both sides. More to the point, the calcium and chloride ions exist on both sides. So the reaction is between the carbonate ion and the hydrogen ions.

The carbonate ion accepts the hydrogen ions (acid-base reaction) to form H2CO3, which dissociates into H2O and CO2.

2007-08-30 17:32:02 · answer #1 · answered by Scarlet Manuka 7 · 3 0

It is just a reaction between a metal carbonate and an acid.There is nothing to do with the change in oxidation number and thus no redox in this case.Ca^2+ remains the charge of 2+ throughout the whole reaction.H^+ and Cl^- do the same.
It is not a combustion. No fire is needed in this reaction.
I fully agree with Scarlet.

2007-08-30 17:56:40 · answer #2 · answered by Anonymous · 0 0

I think there are two reactions involve which is redox reaction and reaction of metal carbonate and acid. Redox reaction happens when there are oxidation and reduction reaction occurs.

edit:-
I guess you right manuka. I think I should have check twice before I answer

2007-08-30 17:29:27 · answer #3 · answered by Neil 5 · 0 0

Acid base neutralizations form water. H+ + OH- -> H2O This is water forming as well. NH3 + O2 --> H2O + NO2

2016-05-17 21:03:51 · answer #4 · answered by ? 3 · 0 0

Combustion.

2007-08-30 17:27:06 · answer #5 · answered by Michael C 2 · 1 1

acid-base + dissociation reaction

2007-08-30 23:19:00 · answer #6 · answered by Matthew T 2 · 0 0

i dont know

2014-09-17 04:35:38 · answer #7 · answered by Anonymous · 0 1

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