
BÀI TẬP BASE - KHTN8
Authored by chi na
Science
8th Grade
Used 1+ times

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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chất nào sau đây là base?
CH3COOH.
Ba(OH)2,
H2SO4
HOH
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hoàn thành câu: Dung dịch base làm quỳ tím …….phenolphthalein không màu …….
Chuyển sang màu đỏ, chuyển sang màu xanh
Chuyển sang màu xanh, chuyển sang màu đỏ
Chuyển sang màu hồng, chuyển sang màu xanh
Chuyển sang màu xanh, chuyển sang màu hồng
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dãy các base kiềm là
KOH, NaOH, Ba(OH)2, Mg(OH)2
KOH, NaOH, Ba(OH)2, Cu(OH)2
NaOH, Ba(OH)2, KOH, Ca(OH)2
KOH, NaOH, Fe(OH)2, Ca(OH)2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Nhận xét nào sau đây là sai?
Cu(OH)2 làm phenolphthalein hóa hồng
Na(OH)2 làm phenolphthalein hóa hồng
H2SO4 làm quỳ tím hóa đỏ
H2SO4 làm phenolphthalein không đổi màu
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho 8 gam Sodium hydroxide (NaOH) tác dụng với lượng dư dung dịch hydrochloric acid (HCl), sau phản ứng thu được m (g) muối.
Tính khối lượng m (g) muối thu được sau phản ứng.
m = 17,1 gam.
m = 17 gam.
m = 11,7 gam.
m = 11 gam.
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