"Properties of Iron and Its Compounds" Experimental Activity PPT

Description

"Properties of Iron and Its Compounds" Experimental Activity PPT

Part One: [Purpose of Experiment]

1. Understand the important chemical properties of iron and its compounds.

2. Learn how to detect iron ions.

3. Understand that substances containing the same element in different valence states can be transformed into each other through redox reactions.

[Experimental equipment and reagents]

Equipment: Test tubes, rubber droppers

Reagents: CuSO4 solution, FeCl3 solution, FeCl2 solution, FeSO4 solution, KMnO4 acidic solution, KSCN solution, KI solution, starch solution, distilled water, zinc flakes, copper flakes, iron powder, iron wire

[Experimental process and conclusion]

1. Properties of iron and its compounds

(1) Reducibility of elemental iron

① Operation: Add 2 mL of CuSO4 solution to a test tube, then put a piece of iron wire into the CuSO4 solution. After a while, take out the iron wire.

②Phenomena: Red substance is generated on the surface of the iron wire

③Explanation (including ionic equation): Iron is more reducible than copper, so it removes copper from the solution.

Displaced from the liquid, the ionic equation is Fe+Cu2+====Fe2++Cu

(2) Oxidizing properties of iron salts

(3) Oxidizing and reducing properties of ferrous salts

2. Testing of iron ions

【Extended Experiment】

Try to design an experiment to verify whether the ferrous chloride powder left in the air for a long time is oxidized? Is it partially oxidized or completely oxidized?

PPT on the properties of iron and its compounds, part 2 content: [Problem Discussion]

1. How to prepare ferrous sulfate crystals using iron filings as raw material?

Tips: (1) Put the iron filings taken from the factory into a beaker, add an appropriate amount of dilute sodium hydroxide solution and soak for two days to remove the oil on the surface of the iron filings.

(2) Take out the iron filings and wash them with water, add enough dilute sulfuric acid to the iron filings, heat, stir, measure the temperature with a thermometer, filter to remove insoluble impurities, add a few drops of KSCN solution, if it does not turn red, the reaction solution is Does not contain Fe3+.

(3) Heating and evaporating, filtering while hot when a large number of crystals appear, to obtain ferrous sulfate crystals.

2. When storing ferrous sulfate solution in the laboratory, a certain amount of iron powder or iron nails is often added. What is the purpose?

Tip: The purpose of adding a small amount of iron powder or nails is to prevent the ferrous sulfate solution from being oxidized by oxygen in the air, causing the reaction 2Fe3++Fe====3Fe2+. Adding iron powder or nails will reduce the oxidized Fe3+ is Fe2+.

Keywords: Free download of the PPT courseware for high school chemistry compulsory course I of the People's Education Press, PPT download of the properties of iron and its compounds, PPT download of experimental activities, .PPT format;

For more information about the "Properties of Iron and Its Compounds Experimental Activities" PPT courseware, please click on the "Properties of Iron and Its Compounds PPT Experimental Activities" PPT tab.

"Diversity of Iron" Properties and Transformation of Matter PPT (Properties of Iron and its Compounds in Lesson 1):

"Diversity of Iron" Properties and Transformation of Matter PPT (Properties of Iron and Its Compounds in Lesson 1) Part One Content: What are the new course standards 1. Understand the properties of iron and its important compounds. 2. Understand the application of iron and its important compounds in production and life. ...

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Update Time: 2024-10-01

This template belongs to Chemistry courseware People's Education Press High School Chemistry Compulsory Course I industry PPT template

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