Hydrogen production
To demonstrate the displacement of hydrogen from hydrochloric acid by the use of zinc.
Lo que aprenden los alumnos
La base científica de este experimento
Hydrogen is the lightest and most abundant element in the universe. This experiment demonstrates a convenient method of obtaining hydrogen from hydrochloric acid.
Equipo utilizado
- Iron stand — 5404.52
- Universal clamp — 5416.20
- Right angle clamp — 5401.16
- Conical flask 150 ml — 1322.10
- Rubber stopper, 2 holes — 5450.80
- Dropping funnel — 1359.00
- Right angle bent glass delivery tube — 1468.07
- Connection for glass delivery tubes — 5449.43
- Dropping pipette — 1441.50
- Beaker 100 ml — 1118.20
- Spatula — 5460.34
- Parafilm — 1646.00
Productos químicos y reactivos
- Hydrochloric acid 2 M — R:34-37 S:26-45
- Granulated zinc
- Distilled water
Notas de seguridad
- Hydrogen is a very flammable gas and forms explosive mixtures with air. It is essential that naked flames are kept well away from the apparatus.
Preguntas para los alumnos
- Describe what has happened and state the reaction.
Qué puedes esperar
<p>On adding the hydrochloric acid solution, bubbles arise from the granulated zinc and the gas displaces the air inside the conical flask.</p><p>The hydrochloric acid reacts with zinc giving zinc chloride and hydrogen. 2HCl + Zn → ZnCl2 + H2 ↑ (g).</p><p>Bubbling into the beaker indicates the gas production.</p>
Eliminación
After the experiment the reaction can be halted by adding 100–150 ml of water to the conical flask. The liquid can then be disposed of in the liquid wastes container.
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Este experimento forma parte del « Mobile Lab » de ATP, un laboratorio autónomo que convierte un aula normal en un laboratorio de ciencias en pleno funcionamiento, con más de 200 experimentos de física, química, biología, robótica e ingeniería. « Gali », el tutor de IA integrado en ATP Connect, guía a los alumnos paso a paso y responde a sus preguntas en la mesa de trabajo.
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