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Detectarea ionilor Fe3+ și NH4+

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Detectarea ionilor Fe3+ și NH4+

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Teste rapide Fe3+ vs NH4+

Created by

valentina galescu
valentina galescu
Moldova

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Detectarea ionilor Fe3+ și NH4+
 

Detectarea ionilor Fe3+ și NH4+Online version

Teste rapide Fe3+ vs NH4+

by valentina galescu
1

Reacția cu Reagens Nessler produce o culoare galben-brun pentru NH4+.

2

Fe3+ formează complex roșu FeSCN2+ în soluție acidă cu SCN-.

3

NH4+ poate fi detectat prin schimbarea de culoare a Nessler/ reagentelor specifice pentru NH4+.

4

NH4+ eliberează amoniac (NH3) la încălzire în prezența NaOH.

5

NH4+ dă o culoare de flacără verde la testul de lumanare, o trăsătură nevalidă pentru identificarea NH4+.

6

Fe3+ formează un precipitat brun Fe(OH)3 atunci când se adaugă NH4OH.

7

NH4+ produce un fum roșu intens în prezența sării de sodiu (NaOH) fără a elibera NH3.

8

Fe3+ dă o soluție albastră cu SCN-, ceea ce este incorect pentru Fe3+.

9

Fe3+ se observă prin calmarea soluției într-un colorant verde cu fier oxidat, ceea ce nu este adevărat.

10

NH4+ nu interacționează cu Nessler și nu schimbă culoarea în acest test.

 
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