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+H2SO4--->H3PO4+SO2+H2O 2.KMnO4+Na2SO3+KOH--->K2MnO4+Na2SO4+H2O 3.KMnO4+PH3+H2SO4--->K2SO4+MnSO4+H3PO4+H2O 4. As2S3+HNO3+H2O--->H3AsO4+H2SO4+NO 5.K2Cr2O7+FeCl2+HCl--->CrCl3+Cl2+FeCl3+KCl+H2O 6.H2SO4+HI--->I2+H2S+H2O 7.Cl2+KOH--->KCl+KClO3+H2O 8.KMnO4+HCl--->KCl+MnCl2+Cl2+H2O 9.Mg+HNO3--->Mg(NO3)2+NH4NO3+H2O 10.KNO3+Al+KOH+H2O--->NH3+KAlO2 Câu2: Một kim loại M tác dụng với dung dịch HNO3 loãng thu được M(NO3)3, H2O và hỗn hợp khí E chứa N2 và N2O. Khi hoà tan hoàn toàn 2,16g kim loại M trong HNO3 loãng thu được 604,8 ml hỗn hợp E có tỉ khối đối với H2 là 18,45. Xác định kim loại M. (Biết tỉ khối liên quan: M= 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: Al2O3,CuO,FeO ở dạng bột và được đựng trong các lọ khác nhau. 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