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Acid + Base > Salt (solid or aqueous?) + Water
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jo7777
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I've just been doing a question and im a little confused.
I always assumed that in a neutralisation reaction acid + base makes a salt, and this salt is a solid.
However, I just read that HNO3 (AQ) + Ca(OH)2 (AQ) > Ca(NO3)2 (AQ) + H2O (L)
So are salts always aqueous or can they sometimes be solid?
I always assumed that in a neutralisation reaction acid + base makes a salt, and this salt is a solid.
However, I just read that HNO3 (AQ) + Ca(OH)2 (AQ) > Ca(NO3)2 (AQ) + H2O (L)
So are salts always aqueous or can they sometimes be solid?
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lerjj
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#2
(Original post by jo7777)
I've just been doing a question and im a little confused.
I always assumed that in a neutralisation reaction acid + base makes a salt, and this salt is a solid.
However, I just read that HNO3 (AQ) + Ca(OH)2 (AQ) > Ca(NO3)2 (AQ) + H2O (L)
So are salts always aqueous or can they sometimes be solid?
I've just been doing a question and im a little confused.
I always assumed that in a neutralisation reaction acid + base makes a salt, and this salt is a solid.
However, I just read that HNO3 (AQ) + Ca(OH)2 (AQ) > Ca(NO3)2 (AQ) + H2O (L)
So are salts always aqueous or can they sometimes be solid?
But for a correct (I think) example:
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jo7777
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#3
(Original post by lerjj)
Depends whether they are soluble or not. Soluble salts will be in solution, insoluble will obv not be. I don't 100% trust your equation because I thought that Calcium Hydroxide was insoluble in water- hence the insoluble white precipitate when mixed with NaOH.
But for a correct (I think) example:
Depends whether they are soluble or not. Soluble salts will be in solution, insoluble will obv not be. I don't 100% trust your equation because I thought that Calcium Hydroxide was insoluble in water- hence the insoluble white precipitate when mixed with NaOH.
But for a correct (I think) example:
Is it safe to say I can assume it's aqueous?
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lerjj
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#4
(Original post by jo7777)
So If I'm in an exam, how would I know whether or not it's a solid or aqueous salt? This is for AS chem btw
So If I'm in an exam, how would I know whether or not it's a solid or aqueous salt? This is for AS chem btw
From a physics standpoint, if you were provided with the enthalpy and energy changes then you could work it out I suppose.
You probably just have to learn them, but I'll ask my sister (she does A2 so she ought to be able to help...)
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Borek
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I don't know what is in which syllabus, but there is a set of rules of thumb, so called "solubility rules" (google them) which help remember which salts are soluble and which are not.
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