Neutralisation Starter: What ions are found in acids? What ions are found in alkalis? What is the chemical formula for water?

give an example of a neutralisation reaction use a pH meter to measure pH observe the changes in pH during a neutralisation reaction explain that acids are similar because they all produce hydrogen ions in solution explain that alkalis are similar because they all produce hydroxide ions in solution give an ionic explanation of neutralisation reactions H: work out the formula of a salt given the formula of the parent acid and alkali

Acids When acids dissolve in water they also react to release ions. HNO3  H+ (aq) + NO3 –(aq) HCl (g)  H+ (aq) + Cl –(aq) H2SO4  H+ (aq) + SO4 –(aq) What is common between all these reactions?

Alkalis Alkalis also react with water. NaOH (aq)  Na + (aq) + OH - (aq) KOH (aq)  K + (aq) + OH - (aq) LiOH (aq)  Li + (aq) + OH - (aq) What is common between all these reactions?

Neutralisation H+ (aq) + OH - (aq)  H2O (l) Hydrogen ions and hydroxide ions react to produce water which is neutral. Lets have a look!

Making salts

Making salts Salts are made when an acid is neutralised by an alkali. Each salt therefore has an acid “parent” and an alkali “Parent”.