Bài kiểm tra tự luận 10 nâng cao

BÀI KIỂM TRA
Họ và tên:................................................................................................
Câu1: Cân bằng các phản ứng oxi hoá khử sau theo phương pháp đã học
1.P+H
2
SO
4
--->H
3
PO
4
+SO
2
+H
2
O
2.KMnO
4
+Na
2
SO
3
+KOH--->K
2
MnO
4
+Na
2
SO
4
+H

2
O
3.KMnO
4
+PH
3
+H
2
SO
4
--->K
2
SO
4
+MnSO
4
+H
3
PO
4
+H
2
O
4. As
2
S
3
+HNO
3
+H

2
O--->H
3
AsO
4
+H
2
SO
4
+NO
5.K
2
Cr
2
O
7
+FeCl
2
+HCl--->CrCl
3
+Cl
2
+FeCl
3
+KCl+H
2
O
6.H
2
SO

4
+HI--->I
2
+H
2
S+H
2
O
7.Cl
2
+KOH--->KCl+KClO
3
+H
2
O
8.KMnO
4
+HCl--->KCl+MnCl
2
+Cl
2
+H
2
O
9.Mg+HNO
3
--->Mg(NO
3
)
2

+NH
4
NO
3
+H
2
O
10.KNO
3
+Al+KOH+H
2
O--->NH
3
+KAlO
2
Câu2: Một kim loại M tác dụng với dung dịch HNO
3
loãng thu được M(NO
3
)
3
, H
2
O và hỗn hợp khí E chứa N
2

và N
2
O. Khi hoà tan hoàn toàn 2,16g kim loại M trong HNO
3

loãng thu được 604,8 ml hỗn hợp E có tỉ khối đối
với H
2
là 18,45. Xác định kim loại M.
(Biết tỉ khối liên quan: M=
Aa+Bb
a+b
trong đó A,B là phân tử khối ; a,b lần lượt là số mol của A và B)
Câu3: Bằng phương pháp hoá học phân biệt các oxit: Al
2
O
3
,CuO,FeO ở dạng bột và được đựng trong các lọ
khác nhau. Bài làm:
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