
Ôn tập 1
Authored by hiếu Minh
Chemistry
1st Grade
Used 5+ times

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1.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Hợp chất FeCl3 có tên là
Sắt (II) clorua
Sắt (III) clohiđric
Fe (II) clorua
Sắt (III) clorua
2.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Có 3 lọ không nhãn chứa dung dịch sau: H2SO4, CaCl2, KOH. Để nhận biết hóa chất chứa trong các lọ, ta có thể dùng
dung dịch NaCl
nước
quỳ tím
axit HCl
3.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Khi hoà tan 100ml rượu etylic vào 50ml nước thì
rượu là chất tan và nước là dung môi
nước và rượu đều là chất tan
nước và rượu đều là dung môi
nước là chất tan và rượu là dung môi
4.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Cho các muối sau: NaCl, NaHSO4, KHS, CaS, Ca(HCO3)2, NaNO3, Ba(H2PO4)2. Các muối axit gồm :
NaCl, NaHSO4, CaS, Ba(H2PO4)2
NaHSO4, KHS, Ca(HCO3)2, Ba(H2PO4)
NaCl, CaS, NaNO3, Ba(H2PO4)2
NaCl, KHS, Ca(HCO3)2, NaNO3
5.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Tính khối lượng Na2SO4 có trong 95 gam dung dịch Na2SO4 30%
27,5 gam
28,5 gam
29,5 gam
30,5 gam
6.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Tính số mol của HCl trong 60ml dung dịch HCl 2M
2,68 mol
2 mol
120 mol
0,12 mol
7.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Ở 200C, độ tan của muối ăn là 36 gam. Nồng độ % của dung dịch muối ăn bão hoà ở 200C là:
25%
22,32%
26,47%
36%
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