Acid and Alkali's

  • Created by: pladoo
  • Created on: 28-10-19 16:27

Acid and alkalis

Common acids

Hydrochloric acid (HCL)

Sulfuric acid (H2SO4)

Nitric acid (HNO3)

Ethanoic acid (CH3COOH)

Common alkalis (soluble bases)

Sodium Hydroxide (NaOH)

Potassium Hydroxide (KOH)

Calcium Hydroxide(Ca(OH)2)

Ammonia (NH3)

Acid - a substance with a PH of less than 7 and forms H+ ions in water

  • molecules of hydrogen chloride gas dissolve in water to form hydrochloric acid. In water, these molecules break up or split into ions

HCl --> H+ + Cl-

Difference between a strong and weak acid

  • In strong acid solutions, all the molecules are split into ions
  • In weak acid solutions, only some of the molecules split into its ions 

Alkali - a substance that has a PH of more than 7 and forms an  OH- ion in water

  • When a sodium hydroxide ion dissolves in water all the ions separate

Difference between alkalis and bases 

  • A base is a substance that reacts with an acid to form a salt and


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