2019年3月15日 · 根据实验(2)向一份溶液中加入BaCl2溶液，立即产生白色沉淀，再加稀HNO3沉淀不溶解，可推断原白色粉末中肯定有Na2SO4，肯定没有Na2CO3(因为BaSO4和BaCO3都是白色沉淀，但BaSO4不溶于稀HNO3，BaCO3溶于稀HNO3)。

使液体沿玻璃棒流 BaCl2+Na2SO4=BaSO4↓+2NaCl 蒸发时，用玻璃棒搅拌滤液，防止滤液局部受热引起液体迸溅。 不溶物留在滤纸上， 滤液呈无色、透明 状

2021年9月12日 · It describes the physical properties, chemical properties tested through general and confirmation tests, and equations for the reactions with barium chloride (BaCl2). The general test uses BaCl2 to predict which radical is present based on solubility of the precipitate formed.

2018年4月19日 · 高中化学人教版必修一第一章第一节：粗盐提纯课件.ppt,粗盐提纯 SO42-、CO32-、Cl-的检验方法 1.检验SO42-严密的方法： 先加盐酸酸化，再加几滴BaCl2溶液。

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In this reaction, there is double displacement or exchange of ions, i.e. chloride ions of BaCl2 have been replaced by sulphate ions of Na2SO4 whereas sodium ions of Na2SO4 have been replaced by chloride ions of BaCl 2. Hence it is a double displacement reaction.

BaCl_2 solution gives a white ppt. with a solution of an acid radical which dissolves in dil. HCl with the evolution of a colourless, pungent smelling gas. The acid radical may be:;S^ {2-};SO^ {2-}_3;SO^ {2-}_4;CO^ {2-}_3. You visited us 0 times! Enjoying our articles? Unlock Full Access!

Check your Performance Today with our Free Mock Test used by Toppers! The reaction is, BaCl 2 + H 2 SO 3 → BaSO 3 + 2 HCl. White ppt makes up this barium sulphite. SO 3 2 −. On dissolving in HCI solution. BaSO 3 + 2 HCl → BaCl 2 + SO 2 + H 2 O. SO 2 gas emits a strong odour. Here the salt contains is sulphite.

2020年4月25日 · When HCl gas is passed through saturated solution of `BaCl_(2),` a white ppt. is obtained. This is due to asked Nov 10, 2021 in Chemistry by SwamiJain ( 94.4k points)

The correct answer is In a chemical reaction, if both cation and anion are mutually interchanged with each other then it is said to be a “Double-displacement reaction”.BaCl2(aq)+Na2SO4(aq)→BaSO4white ppt(s)↓+2NaCl(aq)