Technical data

Acidic, neutral and alkaline reactions of solutions of salts

Article no: P1145600

Principle

The pH-value of a prepared salt solution can be predicted by the strength of the acids and bases which are part of the salt solution. Salts of equally strong acids and bases (e.g., NaCl) react neutral in aqueous solution. Salts of a weak acid / base and strong base / acid react either alkaline or acidic.

In this experiment students develop a scheme to predict the pH-value of salt solutions.

Learning objectives

pH value
properties of salt solution
solubility of salts in water

Scope of delivery

Test tube, Duran®, various lengths	36304-01	12
Spoon, special steel	33398-00	1
Pasteur pipettes, 250 pcs	36590-00	1
Rubber caps, 10 pcs	39275-03	1
Wash bottle, plastic, 500 ml	33931-00	1
Glass rod,boro 3.3,l=300mm, d=7mm	40485-05	6
Ammonium sulphate 250 g	30027-25	1
Ammonium chloride 250 g	30024-25	1
Iron-III chloride 6-hydr. 500 g	30069-50	1
Potassium carbonate,98-100% 250 g	30096-25	1
Potas.dihydrogen phosphate,100 g	30261-10	1
Potass.hydrogen sulphate 250 g	31439-25	1
Litmus, powder 25 g	31517-04	1
Sodium acetate trihydrate, 250 g	30149-25	1
Sodium carbonate, anhyd. 250 g	30154-25	1
Sodium chloride, 500 g	30155-50	1
Sodium pyrosulphite 250 g	30152-25	1
Sodium nitrate 250 g	30160-25	1
Water, distilled 5 l	31246-81	1