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Sketchite

某学习小组为探究盐酸碳酸硅酸酸性强弱并证明醋酸为弱酸进行如下实验实验一该小组利用如下装置探究盐酸碳酸硅酸酸性强弱1该小组 Template






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sketch 5157
sketch 5370 Requiem for the Phantom by Marita Amaya
sketch 3290 Calvin and Hobbes by অনন্ত জলিল
sketch 4605 Goku by Jayme Sousa
sketch 5283
sketch 5346
sketch 2062

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sketch 5323 Cem Adrian by Glynis June Williams
sketch 5170
sketch 929 tree stump
sketch 4549
sketch 3695
sketch 5048
sketch 3148
sketch 3532 Angel by Geneval Mendes





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tomski某学习小组为探究盐酸碳酸硅酸酸性强弱并证明醋酸为弱酸进行如下实验实验一该小组利用如下装置探究盐酸碳酸硅酸酸性强弱1该小组 coloring
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某化学小组同学完成盐的性质实验后处理废液时将过量的碳酸钠溶液与硫酸铜溶液混合现产生了蓝色沉淀小组同学在老师的指导下对该沉淀的成分进行了 sketch template
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某学习小组的同学对实验室制取二氧化碳及二氧化碳的性质进行如下两个方面的探究。Ⅰ二氧化碳的制取第一小组用如图所示的装置制取二氧化碳并测定生成 sketch template
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某学习小组为探究盐酸碳酸硅酸酸性强弱并证明醋酸为弱酸进行如下实验实验一该小组利用如下装置探究盐酸碳酸硅酸酸性强弱1该小组 sketch template
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题目在研究“酸碱中和反应 时某兴趣小组同学想证明稀盐酸与氢氧化钠溶液混合后是否生了化学反应进行了如下探究1在盛有氢氧化钠溶液的 sketch template
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下面是某学习小组在探究稀盐酸和氢氧化钠溶液是否生反应的实验过程1图1是甲小组同学滴有酚酞的稀盐酸中滴加NaOH溶液振荡后溶液仍为无 sketch template
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题目在学习了盐的化学性质后同学们在课外小组活动时做了碳酸钠溶液与稀盐酸反应的实验实验中没有观察到有气泡产生该反应所得无色液体中的溶质 sketch template
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某中学研究性学习小组为探究碳酸钠和碳酸氢钠两种物质的性质制法和用途查阅资料并进行实验．资料卡片1碳酸钠Na2CO3俗名苏打 sketch template
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某学习小组同学为了确定盐酸苯酚碳酸的酸性强弱设计了如图所示的装置图进行实验1锥形瓶内装某可溶性盐写出A中反应的离子方程式 sketch template
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某学习小组对用碳酸盐可以制取CO2进行如下研究1盛有等质量块状纯碱固体和块状碳酸钙固体的两装置中同时分别加入足量的相同质量相同浓度的稀 sketch template
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为探究盐酸的化学性质，某化学小组做了如下实验： sketch template
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某研究性学习小组对中和反应进行探究请你参与实验实验1证明酸和碱生了反应稀盐酸和NaOH溶液混合没有明显现象小丽同学按图1进行实验 sketch template
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某化学小组设计实验探究碳酸钠碳酸氢钠的性质实验如下取两支试管分别加入10mL相同浓度的稀盐酸将两个各装有05g的Na2CO3和 sketch template
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某学习小组对用碳酸盐可以制取CO2进行如下研究1盛有等质量块状纯碱固体和块状碳酸钙固体的两装置中同时分别加入足量的相同质量相同浓度的稀 sketch template
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某学习小组为探究CO2与过氧化钠反应时是否需要与水接触，设计了如图实验装置：实验步骤如下：步骤1：先打开K2，关闭K1，然后打开分液漏斗活塞 sketch template
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某同学为验证盐酸碳酸和硅酸的酸性强弱用如图装置进行实验回答下列问题．1装置Ⅰ中的现象是固体溶解有气泡冒出装置Ⅱ的作用是吸收装置Ⅰ sketch template
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某化学兴趣小组为探究SO2的性质，按下图所示装置进行实验。 请回答下列问题： 1装置A中盛放浓硫酸和亚硫酸钠的仪器名称分别是 、 ； 2 sketch template
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某学习小组在探究碳酸钠的化学性质时做了下图所示的三个实验．1实验一探究碳酸钠溶液的酸碱性．观察到试管中溶液变为红色可得出的结论是碳酸 sketch template
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设计一个实验装置，比较乙酸、碳酸和硅酸的酸性强弱，画出装置图并说出预期的实验现象和结论。 百度教育 sketch template
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某学习小组用下列装置进行CO2的制取及性质探究实验．资料卡片：20℃时，碳酸钠在乙醇中几乎不溶解，氢氧化钠在乙醇中的溶解度为173g．20 sketch template
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某研究性学习小组进行如下探究活动实验目的探究Cl2Br2I2的氧化性强弱．查阅资料常温下高锰酸钾与浓盐酸反应产生氯气溴单质易 sketch template
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研究性学习小组对碳酸钠和碳酸氢钠的性质进行探究请你参与实验 实验一比较两种物质的热稳定性 设计如右图装置小试管套装在带有支管的大试管中 sketch template
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某同学为了探究碳酸的酸性强弱设计了如图所示的装置 1A为碳酸钙B为浓醋酸C为硅酸钠溶液实验现象C中产生白色胶状沉淀由此可得出 sketch template
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某学习小组在探究酸的化学性质时做了如图所示的两个实验1分别装有碳酸钠和碳酸钙粉末的试管中注入一定量的稀盐酸两支试管内均观察到的现象 sketch template
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某学习小组为探究CO2与过氧化钠反应时是否需要与水接触，设计了如图实验装置：实验步骤如下：步骤1：先打开K2，关闭K1，然后打开分液漏斗活塞 sketch template
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某同学为了探究碳酸的酸性强弱设计了如图所示的装置 1A为碳酸钙B为浓醋酸C为硅酸钠溶液实验现象C中产生白色胶状沉淀由此可得出 sketch template
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某校初三化学学习小组的同学前往某地的石灰石矿区进行调查他们取回矿石样品对样品中的碳酸钙的质量分数进行检测采用了以下的办法甲组同学测定 sketch template
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为确认HClH2CO3H2SiO3的酸性强弱某学生设计了如图所示的装置一次实验即可达到目的．请据此回答1装置A的锥形瓶中装的溶液 sketch template
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某小组同学以碳棒为电极电解CuCl2溶液时现阴极碳棒上除了有红色物质 析出外还有量白色物质析出．为探究阴极碳棒上的产物同学们设计了 sketch template
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31．某校学生小组为探究乙酸碳酸和苯酚的酸性强弱并证明乙酸为弱酸进行下述实验 I．探究乙酸碳酸和苯酚的酸性强弱关系 该校学生设计了 sketch template
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某学习小组对“部分酸碱盐溶解性表 中碳酸亚铁的性质设计实验探究．一制备碳酸亚铁．将一定量新制备的硫酸亚铁溶液和过量的碳酸氢铵溶液混合产生 sketch template
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20．某学习生小组为探究乙酸碳酸和硅酸的酸性强弱并证明乙酸为弱酸进行下 述实验 Ⅰ．探究乙酸碳酸和硅酸的酸性强弱关系该小组设计了 sketch template
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31．某校学生小组为探究乙酸碳酸和苯酚的酸性强弱并证明乙酸为弱酸进行下述实验 I．探究乙酸碳酸和苯酚的酸性强弱关系 该校学生设计了 sketch template
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题目某学习小组在探究碳酸钠的化学性质时做了下面所示的实验1实验一探究碳酸钠溶液的酸碱性观察到试管中溶液变为红色可得出结论是 sketch template
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某同学为验证盐酸碳酸和硅酸的酸性强弱用如图装置进行实验回答下列问题．1装置Ⅰ中的现象是固体溶解且有气泡生成装置Ⅱ的作用是吸收CO2 sketch template
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请你参与某学习小组的探究活动并回答相关问题．某化学兴趣小组的同学把氢氧化钠的片状固体放在表面皿中离开实验室一天后进行观察．现问题 sketch template