各位哥哥姐姐,(1)---NaCl+---H2SO4---MnO2--------Cl2+MnSO4+---Na2so4

各位哥哥姐姐,(1)___NaCl+___H2SO4___MnO2-----___Cl2+MnSO4+___Na2so4+___H2O
（2）___Pb+___PbO2+___H2SO4-----___PbSO4+___H2O
(3)___kmNO4+___HCl-----___KCl+___MnCl2+___Cl2+___H2O
(4)[ ]Al+[ ]CuSO4-----[ ]___+[ ]Al2(SO4)3
(5)[ ]Fe+[ ]HCl----- ]___+[ ]H2
(6)[ ]H2S+[ ]___-----[ ]H2O+[ ]S
(7)[ ]MgO+[ ]___-----___Mg(NO3)2+[ ]___