Laboratorio de Aldehídos y Cetonas
Quiz
•
Chemistry
•
University
•
Practice Problem
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Medium
Carlos Hinostroza
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Uno de estos compuestos lo trabajamos en el Laboratorio:
Pentanal
Hexanona
Metanal
Butadieno
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Uno de estos compuestos dio negativo a la prueba de Fehling:
Benzaldehído
Metanal
Propanal
Heptanal
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Al dar positivo con la prueba de Fehling, el precipitado de que color es:
Amarillo
Azulado
Rojo Ladrillo
Celeste
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
El elemento químico que le da la coloración al precipitado de la prueba positiva es:
Cobre
Azufre
Calcio
Magnesio
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Es una solución alcalina de iones Cu+2 complejado con tartrato mixto de sodio y potasio:
Reactivo de Tollens
Reactivo de Fehling
Reactivo de Lucas
Reactivo de Lugol
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Porqué cambia de color la muestra que da positivo en un aldehído?
El Fe+2 a Fe+3
El Fe+3 a Fe+2
El Cu+1 a Cu+2
El Cu+2 a Cu+1
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A que temperatura colocamos las muestras para saber si nos da positivo o negativo en el laboratorio:
200 °C a 205°C
100°C a 105°C
85°C a 90°C
50°C a 55°C
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