
chương 1 sự điện li
Quiz
•
Chemistry
•
1st Grade - University
•
Medium
Tham Tongthi
Used 4+ times
FREE Resource
20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dung dịch A có a mol NH4+ , b mol Mg2+, c mol SO42-, d mol HCO3-. Biểu thức nào biểu thị sự liên quan giữa a, b, c, d ?
2a + b = 2c + d
2a + 2b = 2c + 2d
a + 2b = 2c + d
a + 2b = c + 2d
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chất nào sau đây không dẫn điện?
A.KCl rắn, khan.
B.CaCl2 nóng chảy.
C.NaOH nóng chảy.
D. HBr hòa tan trong nước.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Phản ứng Ba(OH)2 + Na2CO3 có phương trình ion thu gọn là
a.Ba + + CO3 2- = BaCO3
b. Ba + + CO3 _ = BaCO3
c.Ba 2+ + CO3 2_ = BaCO3
d. Ba + + CO3 2- = BaCO3
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dung dịch Ba(OH)2 0,05M có pH bằng
1.
2.
12.
13.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Một dung dịch có [OH-] = 2,5.10-10M, dung dịch có môi trường
Axit
Bazơ
Trung tính
Không xác định
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Trộn 300ml dung dịch HCl 0,1M với 700ml dung dịch Ba(OH)2 0,05M. Vậy giá trị pH của dung dịch thu được là
12,6
13,3
12,3
10,4
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Trộn 20ml dung dịch HCl 0,05M với 20ml dung dịch H2SO4 0,075M. pH của dung dịch thu được là
1
2
3
4
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