Acidic, neutral and alkaline reactions of solutions of salts

Item No. P1145600 | Type: Experiments

10 Minutes

10 Minutes

grades 7-10 , grades 10-13

easy

Teachers/Professors

EUR 551.30

Content 1 piece

EUR 656.05 Incl. VAT

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

Device name

Item No.

Quantity

Test tube, Duran®, various lengths | Length: 200 mm

Item No. 36304-01

12

Test tube rack, wood, for 6 tubes d= 30 mm

Item No. 40569-10

2

Spoon, special steel

Item No. 33398-00

1

Pasteur pipettes, 250 pcs

Item No. 36590-00

1

Rubber caps, 10 pcs

Item No. 39275-03

1

Wash bottle, plastic, 500 ml

Item No. 33931-00

1

Glass rod,boro 3.3,l=300mm, d=7mm

Item No. 40485-05

6

Ammonium sulphate 250 g

Item No. 30027-25

1

Ammonium chloride 250 g

Item No. 30024-25

1

Iron-III chloride 6-hydr. 500 g

Item No. 30069-50

1

Potassium carbonate,98-100% 250 g

Item No. 30096-25

1

Potas.dihydrogen phosphate,100 g

Item No. 30261-10

1

Potass.hydrogen sulphate 250 g

Item No. 31439-25

1

Litmus, powder 25 g

Item No. 31517-04

1

Sodium acetate trihydrate, 250 g

Item No. 30149-25

1

Sodium carbonate, anhyd. 250 g

Item No. 30154-25

1

Sodium chloride, 500 g

Item No. 30155-50

1

Sodium pyrosulphite 250 g

Item No. 30152-25

1

Sodium nitrate 250 g

Item No. 30160-25

1

Water, distilled 5 l

Item No. 31246-81

1

Name

Filename

Filesize

Filetyp

(de) Versuchsbeschreibung

p1145600_de .pdf

Filesize 1.35 Mb

pdf

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