## C2.6 Acids, bases and salts

Acids and bases - KEY DEFINITIONS pH: mathematical function that indicates the concentration of aqueous hydrogen ions, H+(aq) in a water-based solution. pH scale: a logarithmic mathematical scale that extends from 0 (very strong acid) to 14 (very strong alkali). At room temperature, a solution that has a pH equal to 7.0 is described as a neutral solution. Acidic pH or acidic solution: a solution
Making salts - The particular salt produced in any reaction between an acid and a base (or alkali) depends on: ♦ the acid used (hydrochloric acid produces chlorides, nitric acid produces nitrates, sulfuric acid produces sulfates) ♦ the metal in the base or alkali. Ammonia dissolves in water to produce an alkaline solution. It is used to produce ammonium salts. Ammonium salts are
Molarity - Molarity depicts the relationship between solute amount, solution volume and molarity (concentration of solute as moles/litre). Remember, molarity [moles/dm3]= moles ÷ volume [dm3] Remember, 1dm3=1 litre=1000cm3 Simulation made by Phet
pH scale: basics - pH scale: basics helps to visualise the linearity of the acidic-basic pH scale using several household items as examples. Simulation made by Phet

Footprints science  pH scale,  titration of strong acid with strong alkali , neutralisation

Acid, Base and pH simulations by Boardworks (one, two three, four, five, six)