Reactivul de grupă al grupei II analitice este:
Test Grupa 1-3 analitica

Quiz
•
Chemistry
•
12th Grade
•
Hard
M. Diana
Used 14+ times
FREE Resource
9 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
H2S
NaOH
(NH4)2S
(NH4)2CO3
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ionul Ag+ de formează cu reactivul K2CrO4 un precipitat:
Ag2CrO4↓ alb
AgCrO4↓ verde
Ag2CrO4↓ roșu
Ag2CrO4↓ verde
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Reactivul K3[Fe(CN)6)] este utilizat la identificarea cationului:
Fe3+
Hg2+
Fe2+
Bi3+
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cationul care formează cu reactivii [Co(NO3)2 si NH4SCN]: un precipitat albastru cristalin este:
Cu2+
Zn2+
Hg2+
Ni2+
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Reactivul de grupa al grupei III analitice formeză cu ionul Fe2+ un precipitat :
FeS2↓ verde
FeS↓ verde
FeS2↓ negru
FeS↓ negru
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Precipitatul galben s-a format în urma reacției reactivului KI cu ionul:
Ni2+
Hg2+
Pb2+
Fe3+
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Reactivul KSCN formeză un compus roșu-sânge, în reacție cu ionul:
Fe2+
Fe3+
Ni2+
Bi3+
8.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Un reactiv de identificare a cationului Cu2+ este:
NH4OH
KSCN
HCl
KCl
9.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Combinația complexă Fe4[Fe(CN)6)]3↓ se numește:
albastru de Rinmann
verde de Turnbull
albastru de Prusia
nici una din variantele precizate
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