viernes, 8 de junio de 2007

Sublimación del dióxido de carbono

Si estamos buscando “efectos especiales”, podemos añadir nieve carbónica o hielo seco (CO2 en estado sólido) a agua caliente. El CO2 que se encuentra a una temperatura de unos -78ºC, en contacto con el agua caliente pasa directamente a fase gaseosa (se sublima) y genera una nube de dióxido de carbono.
En el vídeo utiliza un recipiente de vidrio y lo que me sorprende es que no estalle debido al cambio de temperatura. El hielo seco se debe manipular con guantes, su baja temperatura puede provocar quemaduras en la piel.

31 comentarios:

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marlin dijo...

es una de las mejores paginas que conozco... pero ojala pudiera traducirze al español los videos.

Anónimo dijo...

el vidrio debe ser refractario

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