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一、硫元素是重要的非金属元素,根据位置、结构关系,画出硫的原子结构、电子式、硫酸分子结构。二、物理性质:纯硫酸是无色油状液体、密度1.84、98.3%的浓硫酸成为恒沸溶液,沸点为611K即338℃.(1)其高沸点性(稳定性)与盐酸、硝酸有何区别?(2)加热NaC l固体与H2SO4浓制HCl体现浓硫酸什么性质?(3)不用化学方法区别两瓶体积相等的浓硫酸和蒸馏水。三、化学性质:1.稀硫酸的化学性质:(1)遇指示剂变色性(2)强酸性(3)氢离子的氧化性
First, sulfur is an important non-metallic elements, according to the location, structure, draw the sulfur atomic structure, electronic, sulfuric acid molecular structure. Second, the physical properties: Pure sulfuric acid is a colorless oily liquid, the density of 1.84, 98.3% concentrated sulfuric acid into a constant boiling solution, the boiling point is 611K that 338 ° C. (1) its high boiling point What is the difference between? (2) What is the nature of concentrated sulfuric acid by heating NaCI solid and H2SO4 concentrated HCl? (3) There is no chemical distinction between two bottles of equal volume of concentrated sulfuric acid and distilled water. Third, the chemical properties: 1. The chemical properties of dilute sulfuric acid: (1) Case of indicator discoloration (2) Strongly acidic (3) Hydrogen ion oxidation