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SlidesAQF1201112 2 100%

Ag+ + Cl- AgCl bianco Ag+ + BrAg+ + IAg+ + X- Kps = 1,2 x 10-10 AgBr giallino Kps = 3,5 x 10-13 AgI giallo Kps = 1,7 x 10-16 AgX Kps = [Ag+] [X-] 9 II GRUPPO ANIONI Distinzione fra Cl- Br- e I1) Solubilità dei loro alogenuri di Ag+ in NH4OH AgCl bianco si scioglie in NH4OH diluita AgBr giallino si scioglie in NH4OH concentrata AgI giallo AgCl non si scioglie in NH4OH concentrata Ag+ + 2 NH4OH + Cl[Ag(NH3)2]+ + 2 H2O 10 II GRUPPO ANIONI Distinzione fra Cl- Br- e I1) Solubilità dei loro alogenuri di Ag+ in NH4OH NH4OH (ammoniaca acquosa) precipita inizialmente Ag+ come Ag2O nero ma in eccesso di reagente (eccesso di NH4OH) il precipitato di Ag2O si scioglie 2 Ag+ + 2 NH4OH Ag2O + H2O + 2 NH4+ + 4 NH4OH 2 [Ag(NH3)2]+ + 2 OH- + 3H2O La formazione del complesso provoca dissoluzione o impedisce la formazione del precipitato:

https://www.pdf-archive.com/2012/07/13/slidesaqf1201112-2/

13/07/2012 www.pdf-archive.com

30-Sitti Yani, Akhiruddin Maddu, Irmansyah 56%

Sebanyak 10 mL NH4OH (0.1 M) dan 5 ml TEA ditambahkan ke dalam larutan campuran tersebut.

https://www.pdf-archive.com/2011/12/05/30-sitti-yani-akhiruddin-maddu-irmansyah/

05/12/2011 www.pdf-archive.com

The Peruvian way 51%

Solid KMnO4 (6% opløsning anvendes) = Kaliumpermanganat (bruges mod eksem) NH4OH 10% = Ammoniumhydroxid (Ammoniakvand eller Salmiakspiritus) HCl 37% = Saltsyre Acetone = opløsnings middel det skal være rent du kan ikke bruge Neglelak fjerner Diethyl ether = Æter ( der kan bruges rensebenzin i stedet eller mineralsk terpentin) Fremgangsmåde:

https://www.pdf-archive.com/2012/03/03/the-peruvian-way/

03/03/2012 www.pdf-archive.com

JDIT-2015-0210-012 43%

Materials and Methods Hydroxyapatite The hydroxyapatite was precipitated by a dropwise addition of (NH4)2HPO4 aqueous solution containing NH4OH, to a solution of Ca(NO3)2 at 37°C and pH equal to 11.

https://www.pdf-archive.com/2017/05/30/jdit-2015-0210-012/

30/05/2017 www.pdf-archive.com

final-report-english 41%

NH4OH: 40 ml, Fe:20 mg).

https://www.pdf-archive.com/2013/10/12/final-report-english/

12/10/2013 www.pdf-archive.com