Tarea 6 Tecmilenio Quimica Ii

Homework 6

1-. Explain the characteristics of an aldehyde.

ETHANAL


|Molecular formula |C2H4O |
|Molar mass |44.05 g mol−1|
|Appearance |Colourless liquid |
| |Pungent, fruity odor |
|Density |0.784 g·cm−3 (20 °C)[2]|
| |0.7904–0.7928 g·cm−3 (10 °C)[2] |
|Melting point |−123.5 °C, 150 K, -190 °F |
|Boiling point |20.2 °C, 293 K, 68 °F|
|Solubility in water |soluble in all proportions |
|Viscosity |~0.215 at 20 °C |

2-. With 10 aldehyde compounds, set an example ofhow aldehydes are named.










3-. In a table write the physical characteristics of an aldehyde.

METHANAL

|Molecular formula: CH2O| Density: .8153 g/cm3 |
|Melting point: -92C° |Boling point: -19° |
|Solubilityin water: 400 g dm-3 |Acidity: 13.3 |

4-. Analyze this table, and indicate in a polygonal graphic the solubilitybehavior, melting and boiling point.

5-. Explain the behavior of the characteristics mentioned, if the number of carbons increases.

• If the number of carbon increases, the boiling pointincreases
• If the number of carbon increases, the melting point sometimes raises as sometimes decreases.
• If the number of carbon increases, the solubility in water decreases exponentially.6-. Make a list of commercial products that contain vanilla scent.

• Vanilla ice cream
• Chocolate cake
• Chocolate cake with vanilla ice cream
• Milk candies, etc.

7-....