Table of Contents
Why does ethylene glycol have higher boiling point than ethanol?
Because ethylene glycol has two –OH groups, both of which can form hydrogen bonds, compared to the one in the other two-carbon molecule, ethanol (‘alcohol’), this is why the boiling point of ethylene glycol is quite a lot higher than that of ethanol.
Why glycerol has higher boiling point?
The answer is hydrogen bonding . Glycerol , H2C(OH)CH(OH)CH2(OH) is extremely viscous, and is quite involatile, b.p = 290∘C . Clearly, the degree of intermolecular force, i.e. the force BETWEEN molecules, is substantial.
Does ethylene glycol raise boiling point?
The use of ethylene glycol not only depresses the freezing point of aqueous mixtures, but also elevates their boiling point.
Why does antifreeze ingredient ethylene glycol have a boiling point of?
Solution for problem 45P Chapter 12 All though the molecular mass of the given molecules are same, the boiling point of ethylene glycol is higher than that of propanol due to the presence of greater number of H-bond. Ethylene glycol contain 2 H-bonds (2 OH groups present) whereas propanol contain only 1 H-bond.
How does ethylene glycol increases the boiling point of water?
Because opposite charges attract each other, this means that ethylene glycol molecules are attracted to each other, making it harder to pull them apart (think of ‘Molecular Velcro’) and this, in turn, makes its boiling point higher than that of hydrocarbons of similar mass.
Why is ethylene glycol more viscous than ethanol?
Ethylene glycol is more viscous than ethyl alcohol because ethylene glycol contains two O-H groups (ethyl alcohol contains one O-H group). This results in stronger hydrogen bonding between ethylene glycol molecules.
Why glycerol has higher boiling point than glycol?
Solution : Due to stronger hydrogen bonding in glycerol.
Why is glycerol such a high boiling and viscous liquid?
Glycerol contains 3 −OH hydroxyl groups. This means that the intermolecular forces are much greater because of these many hydrogen bonds. Therefore the viscosity increases.
Which solvent has the highest boiling point?
Toluene has the highest boiling point (111oC) of the list, and should be avoided if alternatives exist for this reason (as well as its toxicity and smell).
When ethylene glycol is added to water the boiling point of the water?
Pure water, as you may know, has a boiling point of 212°F (100°C) and a freezing point of 32°F (0°C). However, when you create a 50/50 mixture using water and ethylene glycol, the boiling point rises to 223°F (106°C) and the freezing point lowers to -35°F (-37°C).
What intermolecular forces does ethylene glycol have?
The answer is b. dispersion, and H-bonding. London Dispersion Force is available for ethylene glycol since the dispersion force is available to all…
What is the boiling point of ethylene?
-154.7°F (-103.7°C)Ethylene / Boiling point
Why does glycerol have a higher boiling point than ethanol?
Solution : Because of larger number of intermolecular hydrogen bonding (three per molecule) in case of glycerol `(CH_(2)OH-CHOH0CH_(2)OH)` as compared to ethanol `(CH_(3)CH_(2)OH)`, the attraction between molecules of glycerol is more than that between molecules of ethanol.
Which will have higher viscosity glycerol or ethylene glycol & Why?
Viscosity depends on the amount of hydrogen bonding between molecules and presence of more −OH group, glycerol involved in intramolecular hydrogen bonding within the molecule, thus glycerol is more viscous than ethylene glycol.
Why does glycerol have a higher surface tension than water?
Glycerol in water has the highest surface tension followed by detergent solution in water, soup solution in water and water. It is because glycerol has more hydrogen bonds formed per molecule.
How do you know which solution has the highest boiling point?
Multiply the original molality (m) of the solution by the number of particles formed when the solution dissolves. This will give you the total concentration of particles dissolved. Compare these values. The higher total concentration will result in a higher boiling point and a lower freezing point.
Why does ethylene glycol have a lower freezing point than water?
How does this help with antifreeze? Well, ethylene glycol interferes with the hydrogen bonding network in pure water. Water freezes at 0°C and pure ethylene glycol at -12°C, but a mixture of the two freezes at a much lower temperature – the lowest f.p. reached is -55°C in mixtures containing 70% ethylene glycol.
What is the boiling point of glycol?
386.6°F (197°C)Ethylene glycol / Boiling point