高一必修一化学中期考试参考.ppt

标标准状况下 M= 22.4* 同T、同P时时1/2=M1 / M2 一定条件下气体的密度与气 体的摩尔质量成正比 气体摩尔质量与密度的关系 Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 期中复习参考 Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 过滤 蒸发 蒸馏 萃取、分液 1、不可溶性的固体和液体分离： 2、可溶性的固体和液体分离： 3、沸点不同的液体混合物分离： 4、溶解度不同的可溶性混合物分离 ： 混合物分离的几种方法： Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 除去粗盐中可溶性杂质，试剂的加入顺序共 有几种？依据是什么？ （1）BaCl2Na2CO3NaOHHCl （2）BaCl2NaOHNa2CO3HCl （3）NaOHBaCl2Na2CO3HCl 依据： Na2CO3在BaCl2之后加入， （除CaCl2 和BaCl2 ） 稀盐酸最后加入。 （除NaOH 、 Na2CO3 ） 会写离 子方程 式 Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. NaCl MgCl2 CaCl2 Na2SO4 过量BaCl2 过滤 BaSO4 NaCl MgCl2 CaCl2 BaCl2 过量NaOH 过滤 Mg(OH)2 NaCl CaCl2 BaCl2 NaOH 过量Na2CO3 过滤 CaCO3 BaCO3 NaCl NaOH Na2CO3 NaCl 适量 盐酸 粗 盐 Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. SO42- 先加入 酸化，再加入 溶 液，如果出现不溶于稀酸的白色沉 淀，则存在硫酸根离子。 注意排除注意排除COCO 3 3 2-2-等离子的干扰， 等离子的干扰， 酸和钡盐的选择应该视具体情况而酸和钡盐的选择应该视具体情况而 定，不能一成不变定，不能一成不变 离子的检验： 稀HCl 可溶性 钡盐 无现 象 Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. Cl- 加入 现象：出现不溶于稀硝酸的白色 沉淀 结论：存在氯离子。 注意排除CO32-离子的干扰！ 稀HNO3酸化的AgNO3 Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. CO32- 取待测液少许于试管中，向待测液 中先加 ，产生白色沉淀 。过滤，洗涤沉淀，向沉淀中加入 ，产生无色无味气体。 结论：存在CO32-离子。 BaCl2溶液 稀盐酸 Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 冷凝管 蒸馏烧瓶尾接管 锥形瓶 温度计 Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 注意事项: 烧瓶底 加垫石 棉网 温度计水银球处于 蒸馏烧瓶支管口处 冷凝水，下口 进，上口出 投放 沸石 或瓷 片防 暴沸 Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 萃 取 利用溶质在不同溶剂里溶解度的 不同，用一种溶剂把溶质从原来 溶液中提取出来的方法 提取碘水中的碘单质 Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 萃取剂选择的依据是什么？ 1、 萃取剂与原溶剂（水）不互溶、 密度有一定差异。 2、 溶质在萃取剂中的溶解能力要 比在原溶剂（水）中大。 交流和讨论 Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 原理：原理：把两种互不相溶（且密 度不同）的液体分开的操作 装置：装置： 分 液 Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 物质的质量 物质的量 物质含粒子数 （m） （n） （N） M M NA （V） 气体体积 (S、T、P) Vm NA Vm 物质的量浓度 （c） V （aq） V（aq） 看清题目 要求，注 意写单位 ，熟练各 量间换算 。 Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 结 论 相同的温度和压强下，粒子数相同的任 何气体都具有相同的体积。 相同的温度和压强下，相同体积的任何 气体都含有相同数目的粒子。 Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 练习 1. 标准状况，1mol任何物质的体积都约是22.4L。 错，物质应是气体 2. 1mol气体的体积约为22.4L。（错，标准状况） 3. 标准状况下，1molO2和N2混合气体的体积约为 22.4L。（对，气体体积与分子种类无关） 4. 22.4L气体所含分子数一定大于11.2L气体 所 含的分子数。（错，未指明是否在相同条件） 5. 标准状况下，气体的摩尔体积都是22.4L。 6. 只有在标准状况下，气体的摩尔体积才可能约 为22.4L/mol。 （错，不一定） （错，“约为”；单位应为L/mol） Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 练习 下列说法正确的是（ ） （A）在标准状况下，1mol水和1molH2的 体积都约是22.4L （B）2gH2和44gCO2的体积相等 （C）1mol某气体的体积为22.4L，则该气体 一定处于标准状况 （D）标准状况，1gH2和11.2LO2的物质的量 相等 答案 （D） Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 1L 0.5 mol/L AlCl3 溶液c(Cl-) 是： 结论： C（离子）=C（溶液） 角标 1.5 mol/L 2L 0.5 mol/L AlCl3 溶液c(Cl-) 是： aL 0.5 mol/L AlCl3 溶液c(Cl-) 是： 1L 0.3 mol/L AlCl3 溶液c(Cl-) 是： 0.9mol/L 1.5 mol/L 1.5 mol/L Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 溶液稀释公式： 浓浓 稀稀 n（）浓n（）稀 将10mL 0.3 mol/L H2SO4 溶液稀 释成50mL,求稀释后溶液的物质的 量浓度。 0.06mol/L Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 准确配制一定物质的量浓度溶液步骤步骤： 计算溶解洗涤转移 加水 定容 摇匀 转移 称量 5.9g5.9g 装瓶 平摇 Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 误差分析： （） n n （）（） 根据上述公式分析：实验根据上述公式分析：实验 过程中哪些操作会引起过程中哪些操作会引起n n（） （）或 或 的变化，如果可以使其变化的变化，如果可以使其变化 ，则对，则对（） （）造成误差。 造成误差。 Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 1）称量时左盘高,右盘低 2）称量时称量物放在右盘,而砝 码放在左盘 、称量产生误差、称量产生误差 ）量筒量取液体药品时仰视读数 ）量筒量取液体药品时俯视读数 Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 、溶解、转移、洗涤产生误差、溶解、转移、洗涤产生误差 6）未洗涤溶解用的玻璃棒和烧杯 7）洗涤液未转入容量瓶中而倒入废 液缸中 ）溶解过程中有少量液体溅 出烧杯 Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. （ 仰视定容俯视定容 溶液体积增大， 浓度变小 溶液体积减小， 浓度变大 （ Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 9）定容时俯视刻度 0)定容时液面低于刻度线 1）未等溶液冷却就定容 8）定容时仰视刻度 2）定容后发现液面高于刻度线 后,用滴管吸出少量溶液 、定容误差 13)摇匀后发现液面低于刻度再加水 Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 14.原容量瓶洗净后未干燥 15.容量瓶中含有少量的水 16.往容量瓶中加水时有少量加到瓶外 均无影响 Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 分散系 举例 均一 透明 盐水、 酒精的水溶液 100nm 不均一 不透明 不能 泥水 溶液胶体浊液 分散质粒子大小 外观 能否透过滤纸 能 稳定性 稳定较稳定不稳定 分散系： Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 胶体性质丁达尔效应 区分胶体和溶液 应用： （胶体特有的性质） Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 常见的胶体： 烟、云、雾，血液、豆浆、果冻、米 粥汤、蛋清、墨水、肥皂水、有色玻 璃、土壤胶体、蛋白质、淀粉溶液 Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 电解质 在水溶液或在熔融状态下能够导电的化合物 常见的电解质：酸、碱、绝大多数盐 非电解质 在水溶液和在熔融状态下均不导电的化合物 蔗糖、酒精等有机物 电解质与非电解质 Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 下列物质哪些是电解质？哪些是非电解质 ？哪些能导电？ 金属铜 固态NaCl O2 纯H2SO4 碳棒 酒精水溶液 KOH水溶液 葡萄糖 电解质： 非电解质： 能导电： Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 下列物质属于电解质的为 属于非电解质的为 H2SO4 SO3 Fe BaSO4 AgCl NaOH Na2O 练一练： Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile .Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 几点说明： （2）SO3、CO2等酸性氧化物和NH3属于 非电解质 （1）单质既不是电解质也不是非电解质 （3）BaSO4、AgCl 等在水中难溶的 物质由于其融化时可导电，仍是电解质 （4）Na2O、C