You may often hear or see edible acetic acid, but it is only a physical contact. The chemical information about it can be understood through reactions. Next, we will introduce some relevant information to you.
1、 Various chemical reactions
- Methane extraction
(1) Reactants: edible glacial acetic acid, alkali lime;
(2) Condition: Heating;
(3) Explanation: Quicklime CaO in alkaline lime does not participate in the reaction. Its function is to remove water from NaOH, reduce the interaction between NaOH and glass, prevent tube cracking, and also make the reaction mixture loose, facilitating the discharge of methane gas.
- Concentrated sulfuric acid
(1) Condition: Heating;
(2) Phenomenon: There is the production of irritating gases, which is a metathesis reaction;
(3) Explanation: This is a method for preparing relatively pure acetic acid in the laboratory.
2、 Easy preparation
(1) Appliances: soda ash, vinegar, containers (such as discarded beverage bottles or cans), plastic sticks, small spoons.
(2) Step:
① Pour 2 and a half spoonfuls of edible acetic acid into a container and add half a spoonful of soda ash.
② Continuously stir with a plastic rod to dissolve as much as possible.
③ Dispose of the experimental area and dispose of the 1:10 diluted experimental waste liquid to avoid polluting the environment.
(3) Phenomenon: A large number of bubbles quickly overflow, and the pure alkali is gradually dissolved
(4) Advantages: The method is simple, the materials are easy to find, and the joy of experimentation can be experienced at home.