Preparation of Zinc Oxychloride

Preparation of Zinc Oxychloride. Mix 1 g of zinc oxide with a saturated zinc chloride solution containing 1.7 g of anhydrous zinc chloride in a porcelain bowl. Put the mixture onto the lid of a crucible and leave it there for several hours. What occurs Write the equation of the reaction. What is zinc oxychloride used for [Pg.261]

Preparation of Zinc Chloride Crystallohydrate. Put 5 g of granulated zinc into a 50-mI flask, pour in 12 ml of water, and add 13 ml of concentrated hydrochloric acid in small portions. When the reaction slows down, place the flask on a warm water bath and bring the reaction up to its end. Let the flask with its contents stand up to your next lesson. Filter the solution, and test it for the presence of iron(II) ions. If the reaction is positive, saturate the solution with chlorine. For what purpose Tightly close the flask containing the reaction mixture with a stopper and again let it stand up to your next lesson. Heat the flask in a water bath and introduce moist zinc oxide in small portions up to the complete separation of iron hydroxide. How can you determine that the ions of iron have precipitated completely [Pg.261]

Strongly acidify the filtered solution with hydrochloric acid and evaporate it to a syrupy consistence. Next add an equal volume of concentrated hydrochloric acid and let the solution stand for crystallization. Separate the crystals from the mother liquor using a funnel with a glass filtering bottom. What is the composition of the obtained compound What happens to the salt when heated What is the reaction of this salt to litmus Keep the crystals and the mother liquor for following experiments. [Pg.261]

Prepare zinc bromide and iodide in the same way, using hydro-bromic and hydroiodic acids instead of hydrochloric acid. [Pg.262]

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