Re: What is ammonium zincate
From: Qi Wang (wang_iq_at_hotmail.com)
Date: 12/29/04
- Next message: farooq_w_at_hotmail.com: "Re: Burette/Thermom. Readings - Rounding?"
- Previous message: farooq_w_at_hotmail.com: "Re: copper etching"
- In reply to: farooq_w_at_hotmail.com: "Re: What is ammonium zincate"
- Next in thread: SNUMBER6: "Re: What is ammonium zincate"
- Messages sorted by: [ date ] [ thread ]
Date: Wed, 29 Dec 2004 14:38:57 +0800
Thank you for the precise information!
<farooq_w@hotmail.com>
??????:1104297883.014606.319670@f14g2000cwb.googlegroups.com...
>
>
> Apparently the author is referring to a solution of zinc hydroxide
> dissolved in excess ammonia as ammonium zincate; or more practically
> add enough ammonia just to precipitate Zn(OH)2 from any soluble zinz
> salt; separate and dissolve in excess conc. ammonia solution. The name
> is misleading though, since the hydroxide dissolves in ammonia forming
> a compound similiar to copper-ammonia complex of type [Zn(NH3)n](2+)
> not becasue of zincate ions.
>
>
> "Organic Systhesis" also refers to ammonium zincate to "A solution of
> 20 g (0.15 mol) of zinc chloride (ZnCl2) in a mixture of 500 mL of
> concentrated aqueous ammonium hydroxide"
>
- Next message: farooq_w_at_hotmail.com: "Re: Burette/Thermom. Readings - Rounding?"
- Previous message: farooq_w_at_hotmail.com: "Re: copper etching"
- In reply to: farooq_w_at_hotmail.com: "Re: What is ammonium zincate"
- Next in thread: SNUMBER6: "Re: What is ammonium zincate"
- Messages sorted by: [ date ] [ thread ]
Relevant Pages
|
