Repaso reacciones químicas

Presentation

•

Chemistry

•

10th Grade

•

Practice Problem

•

Hard

David Varela

Used 4+ times

FREE Resource

8 Slides • 0 Questions

¿Cómo se produce el vino?

UVAS

ZUMO DE UVA (MOSTO)

FERMENTACIÓN

VINO

Reacción química vs Reacción bioquímica

Levaduras

Reacción química de la fermentación alcohólica

C₆H₁₂O₆

CH₃CH₂OH + CO₂+ CALOR

GLUCOSA

ETANOL +

DIÓXIDO DE CARBONO

MET-
ET-
PROP-
BUT-

Toda sustancia que contenga azúcar es potencialmente fermentable

DESTILACIÓN

Energía de una reacción química

2 H₂O + ENERGÍA

H₂ + 2 O₂

C₆H₁₂O₆

CH₃CH₂OH + CO₂+ CALOR

¿Por qué me interesa saber la energía de una reacción?

H₂ + 2 O₂

2 H₂O + ENERGÍA

Factores que afectan a una reacción:

GLUCOSA

ETANOL +

DIÓXIDO DE CARBONO +

ENERGÍA

100 l

20.000 l

Si tengo 1 litro de mosto con 250 g/l de azúcar, ¿cuánta graduación alcohólica expresado en % de volúmen, obtendré en el vino después de la fermentación? DATOS: Densidad del vino: 992 g/l. Masas atómicas: C=12g ; O=16g ; H=1g

C₂H₆O + ---CO₂

C₆H₁₂O₆

Masa molar de la glucosa (C₆H₁₂O₆):
Masa molar del etanol (C₂H₆O):

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