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(一)卤素 一、选择题 1.实验室用二氧化锰和浓盐酸加热制取氯气时,有14.6克氯化氢被氧化,将所得气体全部用石灰水吸收,可得漂白粉( )。 A.14.3克 B.25.4克 C.28.6克 D.50.6克 2.有A、B、C三种气体它们是Cl_2、HCl、HBr.A、B、C不知分别是哪种,已知A、B混合不反应,则下面正确的是( )。 A.C绝不是HCI B.A、B能确定 C.C可能是HCl D.C不是Cl_2也不是HBr 3.有X、Y、Z三种物质,把过量的X与Y共热,有气体产生,把该气体通入少量Z的溶液中,会产生白色沉淀,则X、Y、Z可以是
(I) Halogen I. Multiple-choice 1. When the laboratory uses manganese dioxide and concentrated hydrochloric acid to heat the chlorine, 14.6 g of hydrogen chloride is oxidized, and the resulting gas is completely absorbed in lime water to obtain bleaching powder (). A.14.3g B.25.4g C.28.6g D.50.6g 2. There are three gases A, B, C They are Cl2, HCl, HBr.A, B, C I do not know which is the type, known A, B mixed does not react, then the correct one is (). AC is by no means HCI BA, B can confirm that CC is probably HCl DC is not Cl2 nor HBr 3. There are three substances X, Y, and Z. Excess X and Y are altogether hot, gas is produced, and the gas is introduced into a small amount In the solution of Z, a white precipitate will be produced, then X, Y, Z can be