Setting up a concentration series with potassium chloride solutions and silver/silver chloride electrodes

Article no. P7401400 | Type: Experiments

10 Minutes

grades 7-10 , grades 10-13

Pupils

medium

Principle

Electrical voltages are not only measurable between different metals in solutions of their salts, but also between half-cells which are the same except for containing different concentrations of the salt solution. Such couples of the same half-cells with different salt concentrations are called "concentration series". In this experiment a potassium chloride solution concentration series is prepared and the voltages measured. Two silver/silver chloride electrodes serve as electrodes.

Learning objectives

How to build galvanic cells
Potential of series of concentration

Benefits

Easy teaching and efficient learning by using interactive experimentation PHYWE-Software
Experiment is part of a complete solution set with experiments for the topic Electrochemistry matched with international curriculum: all topics are covered

Device name

Article no.

Quantity

PHYWE Digital multimeter, 600V AC/DC, 10A AC/DC, 20 MΩ, 200 µF, 20 kHz, −20°C…760°C

Article no. 07122-00

Connecting cord, 2 mm-plug, 5A, 500 mm, red

Article no. 07356-01

Connecting cord, 2 mm-plug, 5A, 500 mm, blue

Article no. 07356-04

Reducing plug 4mm/2mm socket, 2

Article no. 11620-27

Alligator clip, insulated, 2 mm socket, 2 pcs.