Tìm kiếm môi trường

Quiz
•
Chemistry
•
University
•
Hard
Trang Phan
FREE Resource
16 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Xác định có mặt ion Ba2+, dùng
H2SO4 mtr KMnO4
Tủa của BaCO3 trong KMnO4
H2SO4 mtr KMnO4 và sau H2O2
Đều sai
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Xác định có mặt ion Ba2+ với DD H2S tạo tủa , tủa này tan
HCl
CH3COOH
CH3COOH, HCl
CH3COOH, HCl , NaOH
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Xác định có mặt ion Al3+ với hh NH4OH + NH4Cl tạo tủa keo trắng
tan NaOH,HCl
tan CH3COOH
Ko tan NaOH,HCl
ko tan CH3COOH
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
P/ứng Mg2+ với NaOH 2N tủa trắng, ko tan
DD NaOH 2N (dư )
DD HCl 2N
DD CH3COOH
DD NH4Cl
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
P/ứng Na+ với TT Streng mtr
NaOH
NH4Cl
CH3COOH
DD đệm
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
P/ứng I- với TT HgCl2 thành kết tủa đỏ , tủa này tan
HNO3
HgCl3 (dư )
I- (dư)
ko tan 3 mtr
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
P/ứng anion nhóm 2 với TT Ba(NO3)2 thành kết tủa , tan
HNO3 2N
HCl 2N
H2CO3
A,B đều đúng
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