Câu 1. Hoà tan hoàn toàn m gam Al trong dung dịch HCl loãng dư, sau phản ứng thu được 6,72 lít khí (đktc). Giá trị của m là
HCl

Quiz
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Chemistry
•
8th - 12th Grade
•
Medium
Dư Xuân
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30 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A. 5,40.
B. 2,70.
C. 4,05.
D. 6,75.
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Câu 2. Cho một lượng Fe tác dụng vừa đủ với V (ml) dung dịch HCl 2M, sau phản ứng thu được 4,48 lít khí H2 (đktc). Giá trị của V là
A. 350.
B. 200.
C. 300.
D. 150.
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Câu 3. Cho 11 gam hỗn hợp X gồm Fe và Al tan hoàn toàn trong dung dịch HCl loãng dư, sau phản ứng thu được 8,96 lít khí H2 (đktc). Phần trăm khối lượng của Fe trong hỗn hợp X là
A. 56,74%.
B. 46,23%.
C. 50,91%.
D. 52,43%.
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
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