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Making an insoluble salt

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Presentation on theme: "Making an insoluble salt"— Presentation transcript:

1 Making an insoluble salt
Zinc Sulfate

2 Using the image on the next slide, can you complete the table below?
Hazard Risk Control

3 Making zinc sulfate

4 Solubility of salts – the rules
Soluble Salts Insoluble Salts All nitrates Most sulfates Most chlorides, bromides and iodides Sodium carbonate, potassium carbonate Sodium hydroxide, potassium hydroxide None Lead sulfate, barium sulfate Silver chloride, silver bromide, silver iodide, lead chloride, lead bromide, lead iodide Most other carbonates Most other hydroxides

5

6 Mass of zinc oxide (g) Mass of zinc Sulfate (g) % yield

7 Calculating % yield Step 1 – theoretical yield Mass of zinc oxide x Step 2 - % yield Actual mass x 100 = Theoretical mass

8 Why may % yield not be 100%? Discuss

9 In practice, it is not always possible to get the calculated amount of product in a reaction:
reversible reactions may not go to completion some product may be lost when it is removed from the reaction mixture some of the reactants may react in an unexpected way

10 Plenary Name the following salts NaCl MgSO4 KNO3 CaCl2

11 What are the name of the salts formed
Sodium + Sulphuric acid Magnesium carbonate + Nitric acid Potassium oxide + Hydrochloric acid


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