
Kiến thức về Base và pH
Authored by Mai Thị Khuyên
Biology
8th Grade
Used 4+ times

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31 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Điền vào chỗ trống: "Base là những ... trong phân tử có nguyên tử kim loại liên kết với nhóm ... . Khi tan trong nước, base tạo ra ion ..."
Đơn chất, hydrogen, OH−
Hợp chất, hydroxide, OH−
Đơn chất, hydroxide, H+
Hợp chất, hydrogen, H+
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tìm phát biểu đúng:
Base là hợp chất mà phân tử có chứa nguyên tử kim loại
Acid là hợp chất mà phân tử có chứa một hay nhiều nguyên tử H
Base hay còn gọi là kiềm
Chỉ có base tan mới gọi là kiềm
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trong số các base sau đây, base nào là base tan trong nước?
Fe(OH)2
KOH
Cu(OH)2
Fe(OH)3
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Base nào là kiềm?
Ba(OH)2.
Cu(OH)2.
Mg(OH)2.
Fe(OH)2.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dãy chất nào sau đây chỉ gồm các base tan?
Ba(OH)2, NaOH, KOH.
NaOH, Mg(OH)2, KOH.
NaOH, KOH, Cu(OH)2.
Mg(OH)2, Cu(OH)2, KOH
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Thang pH được dùng để:
biểu thị độ acid của dung dịch.
biểu thị độ base của dung dịch
biểu thị độ acid, base của dung dịch.
biểu thị độ mặn của dung dịch
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Nếu pH = 7 thì dung dịch có môi trường:
Trung tính
Base
Acid
Muối
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