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State difference between acids and bases

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State difference between acids and bases
  • 1 answers

Amar Kumar 7 years, 11 months ago

 

Acid

Base

Arrhenius Definition

An acid is any chemical compound which when dissolved in water gives a solution with a hydrogen ion activity greater than in pure water.

A base is an aqueous substance that can accept hydrogen ions.

Bronstead Lowry Definition

An acid is an substance which donates a proton.

A base is any substance which accepts a proton.

pH value

Less than 7.0

Greater than 7.0

Litmus paper

Blue litmus paper turns red

red litmus paper turns blue

Phenolphthalein

Remains colorless

Makes the solution pink

Dissociation (in water)

Acids free hydrogen ions (H+) when mixed with water.

Bases free hydroxide ions (OH-) when mixed with water.

Chemical Formula

An acid has a chemical formula with H at the beginning of it. For example, HCl (Hydrochloric Acid). There is one exception to his rule, CH3COOH = Acetic Acid (vinegar).

A base has a chemical formula with OH at the end of it. For example, NaOH (Sodium Hydroxide).

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