
Chimia analitică
Authored by Olea Surujiu
Chemistry
1st Grade
Used 2+ times

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13 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Din care grupă analitică face parte ionul de Pb2+ ?
II
VI
I
III
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Cationul de NH4+ poate fi identificat cu:
HCl
H2SO4
nu are reactiv de grupă
NaOH
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
ionul sulfat poate fi identificat cu cationul de Ba. Acest precipitat:
este bine solubil în apă
este solubil în acizi
este solubil în baze
nu se dizolvă nici în acizi, nici în baze
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Cationii din grupa a IV-a analitică pot fi identificați cu:
HCl
H2SO4
NH4OH
NaOH
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Substanțele folosite cu scopul separării cationilor sau anionilor din amestec se numesc:
reactivi de grupă
grupă analitică
cationi
anioni
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Din grupa întâia de anioni fac parte:
Cl-, SO42-
SO42- , CO32-
Cl-, CO32-
nici una din variante nu este corect
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Care ion la identificare dă culoarea ”Sângelui”:
Fe3+
Fe2+
Cu2+
SO42-
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