3b-scientific Hofmann's Voltameter, Small User Manual download pdf

3B SCIENTIFIC

PHYSICS

Hofmann's Voltameter, S U58010

Instruction Sheet

11/08 ALF

1 Stand base with rod

2 Sockets

3 Gold leaf electrodes

4 Gas collection tube

5 Stop cock

6 Water reservoir

1. Safety instructions

The apparatus is made of glass. There is a risk of

breakage and resulting injury.

• Handle the apparatus with care when carrying it

and make sure it is stable on the desk.

• Do not subject the glass components to

mechanical stress.

Hydrogen and oxygen form an explosive mixture.

• Never re-combine the gases in a test tube.

Since the conductivity of distilled water is too low

electrolysis is carried out using dilute sulphuric acid

(c = 1 mol/l approx.). Students should always be

informed of the dangers of the chemicals needed for

the experiment.

• Carefully add the sulphuric acid to the water

while stirring. Never do this the other way round.

• Wear protective goggles when mixing the solution

and when releasing the gases.

Caution! Any acid that escapes can cause irreparable

stains and holes in clothing.

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3B SCIENTIFIC® PHYSICS 1 Hofmann's Voltameter, S U58010 Instruction Sheet 11/08 ALF 1 Stand base with rod 2 Sockets 3 Gold leaf elec

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3b-scientific Hofmann's Voltameter, Small User Manual