
Hoá học đại cương
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Professional Development
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phuong nguyen
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60 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dung dịch NaOH 4M có d= 1,43 g/mol . Tính C% của dung dịch NaOH MNAOH = 40
11,88%
12,20%
11,19%
11,79%
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tính lượng H2C2O4 2H2O cần dùng để pha thành 1 lít dung dịch H2C2O4 0,1N. Biết MH2C2O4.2H2O =126,06g/mol.
6,3 g
5,5g
4,9g
3,6g
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tính pH của dd NH3 0,1M, biết Kb CỦA NH3=1,8.10-5 và bỏ qua sự phân li của nước
2,87
8,26
12,24
11,13
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tên phức [ Co(NH3 )4 Cl2 ] Cl
Coban (III) têtramminđicloro clorua
Coaban (II) tetramminđicoloro clorua
Têtramminđicloro clorua Coban (III)
Têtramminđicloro Coban(II) clorua
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
[ Pt ( NH3 )2 Cl2
Điamminđicloroplatin
Điamminđicolruaplantin
Điamminđicloroplantinat
Plantinatđiamminđicloro
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Nhiệt tạo thành chuẩn của các đơn chất ở dạng bền vững nhất bằng
0
1
2
3
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tính lượng K2Cr2O7 cần để pha 1 lít dung dịch K2Cr2O7 0,1N. MK2Cr2O7 = 294,19 g/mol
6,8g
5,7g
4,9g
3,6g
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