"Common Acids and Bases" Acids and Bases PPT Courseware (Lesson 3)

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"Common Acids and Bases" Acids and Bases PPT courseware (Lesson 3), 48 pages in total.

new knowledge learning

Knowledge point 1: Several common bases

In addition to sodium hydroxide and calcium hydroxide, common alkalis include potassium hydroxide (KOH), ammonia (NH3·H2O), etc.

Explore point 1: Common bases

[Question Research]What are the common bases? What are the common names for sodium hydroxide and calcium hydroxide?

[Inductive improvement]Common alkalis include sodium hydroxide (NaOH), calcium hydroxide[Ca(OH)2], potassium hydroxide (KOH), ammonia (NH3·H2O) wait. The common names of sodium hydroxide are: fire soda, caustic soda, caustic soda; the common names of calcium hydroxide are: slaked lime, slaked lime.

[Summary]Sodium hydroxide is a white solid that is easily deliquescent and releases a lot of heat when dissolved in water. In addition, sodium hydroxide is highly corrosive and easily reacts with carbon dioxide in the air to cause deterioration. If you accidentally get sodium hydroxide on your skin, rinse immediately with plenty of water and then apply boric acid solution. These properties make sodium hydroxide a hot topic, and you need to focus on mastering these properties when studying.

Extension: Since sodium hydroxide is easy to deliquesce and is highly corrosive, it cannot be placed on paper when weighing, but should be placed in glassware.

Class feedback

Knowledge point 1 Common bases

1. Which of the following statements is wrong ()

A. Sodium hydroxide is commonly known as caustic soda

B. Hydrated lime is used as a desiccant in the laboratory

C. Sodium hydroxide can remove oil stains

D. Calcium hydroxide is slightly soluble in water

2. In order to prevent small packaged food from getting damp, the desiccant often placed in food packaging bags may be ()

A. Sodium chloride b. Concentrated sulfuric acid

C. Quicklime D. sodium hydroxide

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For more information about the PPT courseware "Acids and Bases Common Acids and Bases", please click on the Acids and Bases PPT Common Acids and Bases PPT tab.

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Update Time: 2024-11-26

This template belongs to Chemistry courseware People's Education Press Ninth Grade Chemistry Volume 2 industry PPT template

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