K11 CHƯƠNG I: LT 03
2nd Grade
•42 Qs
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K11 CHƯƠNG I: LT 03
Quiz
•
Chemistry
•
2nd Grade
•
Practice Problem
•
Medium
Hồng Vũ
Used 2+ times
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42 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trong các dung dịch sau đây: K2CO3, KCl, CH3COONa, NH4Cl, NaHSO4, Na2S có bao nhiêu dung dịch có pH > 7?
2
3
4
5
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chọn các chất là hiđroxit lưỡng tính trong số các hiđroxit sau:
Zn(OH)2, Fe(OH)2.
Al(OH)3, Cr(OH)2.
Zn(OH)2, Al(OH)3.
Mg(OH)2, Fe(OH)3.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho các hiđroxit sau: Mg(OH)2, Zn(OH)2, Al(OH)3, Fe(OH)2, Sn(OH)2, Pb(OH)2, Fe(OH)3, Cr(OH)3, Cr(OH)2. Số hiđroxit có tính lưỡng tính là
3
4
5
6
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho dãy các chất: Ca(HCO3)2, NH4Cl, (NH4)2CO3, ZnSO4, Al(OH)3, Zn(OH)2. Số chất trong dãy có tính chất lưỡng tính là
2
3
4
5
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pha loãng dung dịch HCl có pH = 3 bao nhiêu lần để được dung dịch mới có pH = 4
1
5
10
100
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tính thể tích nước cất cần thiết để pha loãng 50ml dung dịch HCl có pH = 1 sao cho dung dịch sau khi pha loãng có pH = 2 là
A. 905. B. 990. C. 900. D. 1000.
450 ml
550ml
500 ml
650ml
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tính thể tích nước cất cần thiết để pha loãng 20ml dung dịch HCl có pH = 1 sao cho dung dịch sau khi pha loãng có pH = 3 là
2000 ml
2 lit
1980 ml
1800 ml
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