What are the characteristics of acids, Chemistry

Vinegar, orange juice, and battery fluid are familiar acids. Different acids have different acid strengths.

Some characteristics of acids are:

  • They taste sour.
  • They can react with certain metals, such as magnesium and zinc, to produce hydrogen gas.
  • They can neutralize bases. This reaction is called aneutralization reaction.
  • Acids can change the color of blue litmus to red. Litmus is a kind of pH-sensitive dye. It is therefore used as an acid-base indicator.

The three most important definitions for acids follow:

  • Arrhenius definition: Acids produce H+ ions in aqueous solutions.
  • Bronsted-Lowry definition: Acids are hydrogen-ion donors.
  • Lewis definition: Acids are electron pair acceptors.

 

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