What is Ac? Important knowledge about Ac.

  1. Definition of Acid
    Acid is a chemical substance that exists in nature or is produced by humans. Acid can be solid, liquid, or gas, depending on temperature and pressure conditions. Acid often has a distinctive smell, turns litmus paper from blue to red, and can activate H+ ions in solution.
    1.1 Names
    1.1.1 Common name: Acid (not fixed)
    1.1.2 English name: Acid
    1.2 Atomic mass: Depends on the type of acid
    1.3 Atomic weight: Depends on the type of acid
    1.3.1 Molecular structure: Includes one or more hydrogen atoms linked to non-metal atoms or atom groups
    1.4 Ion structure: Typically H+ ions and ion groups of organic and inorganic acids

  2. Properties of Acid
    2.1 Physical properties of Acid

    • State: Depends on the type of acid and temperature, pressure conditions
    • Color: Usually colorless
    • Smell: Specific depending on the type of acid
    • pH level: Usually less than 7
      2.2 Chemical properties of Acid: Ability to activate H+ ions and react with bases to form salts and water.

  3. Statistical chemical equation of Acid

    • Metal reaction: Acid + Metal -> Salt + Hydrogen
    • Acid reaction: Acid + Base -> Salt + Water
    • Non-metal reaction: Acid + Non-metal -> Salt + Hydrogen
    • Reaction with salt: Acid + Salt -> Newsalt + Acidorbase

  4. Acid preparation
    4.1 Lab preparation of Acid: Acid can be prepared from salt, oxygen, and other acids or bases.
    4.2 Industrial preparation of Acid: Usually the method of preparation from inorganic or organic substances through chemical reactions is used.

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