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47 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chất nào sau đây là chất điện li yếu
A. NaCl
B. HCl
C. HF
D. KOH
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chất nào sau đây khi hòa tan vào nước không bị điện li
A. CuCl2
B. Saccarozơ
C. BaCl2
D. HBr
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chất nào sau đây là chất điện li yếu
A. HCl
B. KNO3
C. CH3COOH
D. NaOH
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Công thức PH
A. PH=lg [H+]
B. pH=-lg[H+]
C. pH= +10 lg[H+]
D. pH=0-lg[OH-]
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Công thức đúng là
A. pH=lg[H+]
B. pOH=-lg[H+]
C. pH=10+lg[H+]
D. pOH=-lg[OH-]
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Công thức đúng là
A. pH+pOH=14
B. pH+pOH=7
C. pH - pOH=14
D. pH - pOH=7
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Công thức đúng là
A. [H+].[OH-]=10-¹⁴
B. [H+].[OH-]=10-⁷
C. [H+]/[OH-]=10-¹⁴
D. [H+]/[OH-]=10-⁷
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