"Research on Carbon Dioxide Production" Carbon and Carbon Oxides PPT Download

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"Research on Carbon Dioxide Production" Carbon and Carbon Oxides PPT download, 15 pages in total.

Introduction of new courses

Learn from the knowledge and some information: What methods and ways can we obtain carbon dioxide?

①Charcoal burning;

② Human breathing;

③Calcined limestone;

④ Calcium bicarbonate decomposes;

⑤Acid (dilute hydrochloric acid, dilute sulfuric acid) reacts with limestone;

⑥Acid (dilute hydrochloric acid, dilute sulfuric acid) reacts with sodium carbonate powder;

⑦Basic copper carbonate decomposes when heated...

From the perspective of energy and environmental protection, economic perspective, difficulty of operation, etc., everyone expressed their opinions, eliminated obviously unsuitable raw materials and methods, and selected a suitable method for producing carbon dioxide in the laboratory.

New lesson explanation

1. Principle of carbon dioxide production

1. Drugs: CO2 is commonly produced in laboratories by reacting marble (or limestone) with dilute hydrochloric acid.

2. Chemical equation: CaCO3+2HCl===CaCl2+H2O+CO2↑

2. Devices for producing carbon dioxide

[Problem exploration]

1. Please observe carefully, what phenomena occur during the experimental operation of producing carbon dioxide in the laboratory?

The marble gradually dissolved and a large number of bubbles emerged.

2. What device should be chosen to produce CO2 in the experiment? What is the purpose of the long-necked funnel in this device? Why reach below the liquid surface?

Since the limestone in the reactants is solid and dilute hydrochloric acid is liquid, the reaction does not require heating, so a solid-liquid non-heating gas generating device should be selected.

To facilitate the addition of hydrochloric acid, a long-neck funnel is used.

The lower end of the long-neck funnel should extend below the liquid surface to prevent the generated CO2 from escaping from the long-neck funnel.

Summary

1. The laboratory uses marble (or limestone) and dilute hydrochloric acid to react to produce carbon dioxide. The reaction principle can be expressed by a chemical equation as CaCO3+2HCl=CaCl2+H2O+CO2↑.

2. The laboratory commonly uses "solid-liquid non-heated gas production device" to produce CO2, and uses the "upward air exhaust method" to collect CO2.

3. Place a burning wooden stick flatly on the mouth of the gas collecting bottle. If the flame of the wooden stick goes out, it proves that the CO2 has been fully collected.

Reinforcement exercises

1. When preparing carbon dioxide in the laboratory, after adding acid to the Erlenmeyer flask containing limestone, after a while there are almost no bubbles on the surface of the limestone. The reason is ()

A. Air leakage from the stopper of the conical bottle B. No heating

C. The sulfuric acid solution was added. D. The solution was not stirred with a glass rod.

2. The following are the device diagrams for the production, drying, collection and property testing of carbon dioxide. The correct one is ()

3. Experiments show that carbon dioxide gas cannot be produced by reacting block marble with dilute sulfuric acid, but carbon dioxide gas can be produced by reacting marble powder with dilute sulfuric acid. The reasonable conclusion drawn from this is ()

A. Whether a reaction occurs between reactive substances depends on the reaction conditions.

B. The larger the contact area between the reactants, the more conducive it is to the reaction.

C. The chemical properties of block marble and marble powder are different

D. The compositions of lump marble and marble powder are different

Homework

Chemical experiments advocate green environmental protection, and miniaturization and improvement of experimental devices is a good way. Picture A is a device for preparing and testing CO2 in the laboratory, and Picture B is a "miniature" improved device of the experimental device in Picture A. .

(1) The role of the micro plastic dropper in Figure B in the experiment is the same as the ____ instrument in Figure A (fill in the letter number). (2) Usually, the amount of hydrochloric acid required to complete the experiment using device A is 10 times that of the "micro" experimental device. The advantage of using the "micro" experimental device is _______________________________.

Keywords: Free download of PPT courseware for the ninth grade of Chemistry Volume 1 of the People's Education Press, PPT download of research on carbon dioxide production, PPT download of carbon and carbon oxides, .PPT format;

For more information about the PPT courseware "Research on the Preparation of Carbon Dioxide from Carbon and Oxides of Carbon", please click on the PPT tab of "Research on Preparation of Carbon Dioxide PPT from Carbon and Oxides of Carbon".

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Update Time: 2024-08-02

This template belongs to Chemistry courseware People's Education Press Ninth Grade Chemistry Volume 1 industry PPT template

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