Leaving Certificate 2014/15
Mandatory Experiments
Below is a suggested breakdown of the 28 mandatory experiments to
answer questions in Section A. Parts of these experiments may occur
randomly in Section B also.
Q.1
Q.1
Q.1
Q.1
Q.1
Q.1
Q.1
Q.1
Q.1
Q.1
Q.2
Q.2
Q.2
Q.2
Q.2
Q.2
Q.2
Q.2
Q.3
Q.3
Preparation of a standard solution of sodium carbonate
Standardisation of a hydrochloric acid solution
Hydrochloric acid / Sodium hydroxide titration and use of this reaction to make salt NaCl
Determination of the concentration of ethanoic acid in vinegar
Determination percentage water of crystallisation in a sample of hydrated sodium carbonate
A potassium manganate (VII) / ammonium iron(II) sulphate titration
Determination of the amount of iron in an iron tablet
An iodine \ thiosulphate titration
Determination of the percentage of hypochlorite in bleach
Estimation of total hardness using ethylenediaminetetraacetic acid. [edta]
Estimation of dissolved oxygen by redox titration
Preparation and properties of ethene
Preparation and properties of ethyne
A. Extraction of clove oil from cloves [or similar] by steam distillation
B. To isolate clove oil (eugenol) from an emulsion of clove oil and water by liquid-liquid
extraction using cyclohexane.
Preparation of soap
Reactions of Ethanal
Reactions of Ethanoic Acid
To oxidise phenylmethanol (benzyl alcohol) to benzoic acid with potassium permanganate
solution in alkaline conditions.
Recrystallisation of benzoic acid and determination of its melting point
Q.3
Q.3
Q.3
Flame tests
To test for anions: chloride, carbonate, hydrogen carbonate, nitrate, sulphate, phosphate,
and sulphite.
To find the relative molecular mass of a volatile liquid
Redox reactions of Group VII elements.
Halogens as oxidising agents with bromides, iodides, Iron(II) and sulphites
Displacement reactions of metals
Monitoring the rate of production of oxygen from hydrogen peroxide using MnO2
Determination of the heat of reaction of hydrochloric acid with sodium hydroxide
Studying the effects on the reaction rate of (i) concentration, (ii) temperature
Q.3
Simple experiments to Illustrate Le Chatelier’s Principle
*Q.3
To determine total suspended and dissolved solids in p.p.m. by filtration and evaporation,
determine pH
Q.3
Colorimetric expt to estimate the concentration of free chlorine in swimming pool or bleach
Q.3
Q.3
M.Healy, PCH 2014/15