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Topic: How does tin(IV) chloride form a hydrate when it decomposes with H2O contact?  (Read 3281 times)

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Offline nj_bartel

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How does tin(IV) chloride form a hydrate when it decomposes with H2O contact?
« on: October 29, 2009, 09:20:36 PM »
Pretty much all said in title.  Stannic chloride  :rarrow: Stannic chloride pentahydrate.
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Offline BluRay

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Re: How does tin(IV) chloride form a hydrate when it decomposes with H2O contact?
« Reply #1 on: October 30, 2009, 02:05:06 PM »
Not only SnCl4, but many other salts, like Fe(NO3)3, AlCl3, ecc. The reaction you mention is the hydrolisys:
Sn4+ + nH2O <--> [Sn(OH)n](4-n)+  0<=n<=4
Fe3+ + nH2O <--> [Fe(OH)n](3-n)+ ;  0<=n<=3
So it's an equilibrium; lowering the pH displaces the reaction towards the left. Those compounds are infact synthesized in strongly acidic solutions.
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Offline nj_bartel

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Re: How does tin(IV) chloride form a hydrate when it decomposes with H2O contact?
« Reply #2 on: October 30, 2009, 06:56:28 PM »
Thanks! :)
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