
ôn tập N-S
Authored by Nguyễn Nội
Chemistry
11th Grade
Used 1+ times

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15 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Cho dung dịch có chứa : Al3+ : 0,1 mol ; Ca2+ : 0,2 mol ; Cl- : a mol. Giá trị của a là
0,5
0,4
0,3
0,7
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dung dịch NaOH 0,001M có giá trị pH là
1
3
11
13
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Thêm nước vào 10 mL dung dịch HCl có pH=1 để được 1000 mL dung dịch X. pH của X là
0
2
3
5
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho hỗn hợp O2, SO2 có tỉ khối so với H2 là 24. % thể tích O2 trong hỗn hợp là:
30%
40%
50%
60%
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hấp thụ a mol SO2 (đkc) vào nước vôi trong (Ca(OH)2) dư thu được 1,2g kết tủa. Giá trị của a là:
0,01
0,02
0,03
0,1
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Cho 14,874 lít N2 (đkc) tác dụng với lượng dư khí H2. Biết hiệu suất của phản ứng là 30%, khối lượng NH3 tạo thành là
6,12g
5,58g
7,8g
8,2g
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trộn 100 ml dung dịch H2SO4 1M với 100ml dung dịchBaCl2 2M. Khối lượng kết tủa thu được là
23,3g
11,65g
34,95g
6,6g
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