A piece of metal is weighed and placed in the insert of the reaction cylinder, whereafter an acid is added to the cylinder through the three-way valve until it is about half full. The metal is made to react with the acid by lowering the insert. The gas syringe connected to the reaction cylinder is used to collect the hydrogen which is generated. The mass of the metal and the volume of the hydrogen generated are used to calculate the desired molar mass. The reaction can also be used to determine the valency of the metal.
| Materiallist (Excerpt) |
Product |
Amount |
|
Cobra4 hand-held pressure and temperature measuringinstrument, Cobra4 Mobile-Link
|
12736-00
|
1
|
|
Frame for complete experiments
|
45500-00
|
1
|
|
Reaction cylinder w.stopcock,GL25
|
35852-15
|
1
|
|
Holder for syringes
|
45523-00
|
1
|
|
Gas syringe,100 ml, w.3-way cock
|
02617-00
|
1
|
|
Panel f. compl. experim. set-ups
|
45510-00
|
1
|
|
Clamping holder,0-13mm,fix.magne.
|
02151-07
|
1
|
|
Clamping holder,turnable,8-10mm
|
45522-00
|
1
|
|
Test tube GL25/8, w.hose connec.
|
36330-15
|
1
|
|
Rear-cover for compl.-exp. panel
|
45501-00
|
1
|
|
Water, distilled 5 l
|
31246-81
|
1
|
|
Clamping holder,18-25mm
|
45520-00
|
2
|
|
Hydrochloric acid 37 %, 1000 ml
|
30214-70
|
1
|
|
Lab thermometer,w.stem,+15..+40C
|
38057-00
|
1
|
|
Zinc, granul., 99.5%, 500 g
|
31998-50
|
1
|
|
Spring plugs, 50 off
|
45530-00
|
1
|
|
Levelling bulb,glass
|
36515-00
|
1
|
|
Glass tubes,straight, 150 mm, 10
|
36701-64
|
1
|
|
Glass beaker DURAN®, tall, 250 ml
|
36004-00
|
1
|
|
Funnel, glass, top dia. 80 mm
|
34459-00
|
1
|
|
Lab. pencil, waterproof
|
38711-00
|
1
|
|
Rubber tubing, i.d. 6 mm
|
39282-00
|
1
|
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