Evaluacion de segunda practica de laboratorio
Quiz
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Chemistry
•
University
•
Medium
keisy Lora Reyes
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuál es el grupo funcional presente en los aldehídos?
–OH
–COOH
–CO–
–CHO
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué grupo funcional tienen las cetonas?
–CHO
–OH
–NH₂
–CO–
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cómo se llama el reactivo que forma un precipitado amarillo con aldehídos y cetonas?
Tollens
Fehling
2,4-DNFH
Benedict
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuál es la principal diferencia estructural entre un aldehído y una cetona?
La presencia de oxígeno
La solubilidad en agua
La posición del grupo carbonilo
El número de átomos de carbono
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué reactivo se usa para diferenciar aldehídos de cetonas mediante un espejo plateado?
Benedict
Yodo
Tollens
2,4-DNFH
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuál de estos compuestos reacciona con Fehling y da un precipitado rojo?
Acetona
Formaldehído
Acetofenona
Propanona
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué propiedad física suele ser mayor en los aldehídos comparados con los alcanos?
Solubilidad en agua
Densidad
Toxicidad
Color
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