Based on your knowledge of intermolecular forces, which of the following would you expect to have the highest boiling point?

1 answer:

7 0

Answer is: d). 1-propanol. Because between two molecules of 1-propanol can for form hydrogen bond, between hydrogen and oxygen in hydroxy group.

1) Chemical formula for propanal is CH₃-CH₂-CH=O. Propanal is a saturated three carbon aldehyde (have a carbonyl center).
2) Chemical formula for propane is CH₃-CH₂-CH₃. Propane is a three carbon alkane (acyclic saturated hydrocarbon).
3) Chemical formula for propanone is (CH₃)₂-C=O. Propanone or acetone is he simplest and smallest ketone.
4) Chemical formula for propanol is CH₃-CH₂-CH₂-OH. 1-propanol is a primary alcohol.
Hydrogen bond is an electrostatic attraction between two polar groups that occurs when a hydrogen atom (H), covalently bound to a highly electronegative atom such as flourine (F), oxygen (O) and nitrogen (N) atoms.

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Let's consider the following table with melting and boiling points for 4 substances.

Substance Melting Point (°C) Boiling Point (°C)

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Let's consider that:

Below the melting point, a substance is solid.
Between the melting and the boiling point, a substance is liquid.
Above the boiling point, a substance is gas.

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At 100 °C, W is above the boiling point

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The largest difference between the melting point and the boiling point is that of X: 2500 - 660 = 1840.

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Y is between the melting and the boiling point at 1000 °C and above the boiling point at 2000 °C.

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