Datasheet
15
16
These changing water levels show that gases are formed inside the containers: hydrogen is being
produced on the negative side or “cathode” of the fuel cell, and oxygen is being produced on the positive
side or “anode” of the fuel cell. The hydrogen produced will be twice the volume of the oxygen produced.
The hydrogen production cycle is complete when bubbles start surfacing from the inner container. When
bubbles start to appear, disconnect the solar panel from the reversible fuel cell.
Activities: Measuring the hydrogen and oxygen production
Goal of this experiment:
Students will establish that hydrogen and oxygen are produced at a 2:1 ratio.
Rao (Hydrogen to Oxygen volume)
Volume of Oxygen (ml)
Volume of Hydrogen (ml)
Time (min)
Reversible fuel cell (electrolyzer funcon) data recording chart
Gas volumes produced and raos
10
15
20
25
30
35
40
45
50
Using the battery pack to perform electrolysis (in case of no sunlight)
Find the battery pack (L) and make sure the power switch is in the “off” position. Use a screwdriver to
open the empty battery pack and insert 2 AA batteries into the casing, then close the lid by replacing the
screws onto the battery pack.
Connect the red plug of the battery pack (L) to the red input jack of the reversible fuel cell (C). Connect
the black plug of the battery pack (L) to the black input jack of the reversible fuel cell (C). Make sure this
connection is absolutely correct. Any other connection will permanently damage your reversible fuel cell
module (see picture below).
Turn the battery pack (L) on, and watch closely as water is
displaced in the water tanks (D & E) and small bubbles
start appearing. You will notice that they appear faster than
by using the solar panel, as the output power of the battery
pack is higher than that of the solar panel.
Note: Read the battery pack operation instructions on
page 27 carefully before use.