The properties of alkanes related to boiling point, melting, polarity and solubility
The properties of alkanes related to boiling point, melting, polarity and solubility
Homework Answers
The properties of alkanes :
(1) Boiling point : Alkanes experience intermolecular van der Waals forces. Stronger intermolecular van der Waals forces give rise to greater boiling points of alkanes.
(2) Melting point : The melting points of the alkanes follow a similar trend to boiling points for the same reason as outlined above.There is one significant difference between boiling points and melting points. Solids have more rigid and fixed structure than liquids. This rigid structure requires energy to break down. Thus the better put together solid structures will require more energy to break apart.
(3) Polarity :Alkanes do not have polarity due to they do not form hydrogen bonds and are insoluble in polar solvents such as water.
(4) Solubility : Due to lack of polarity they soluble in non-polar solvents.Since we know that "like dissolve like".
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The properties of alkanes related to boiling point, melting,
polarity and solubility
Properties of Alkanes 1. mention some properties of alkanes in terms of their: a. physical state-...
Properties of Alkanes 1. mention some properties of alkanes in terms of their: a. physical state- depends on the ______ of carbons b. Polarity- c. Solubility in water- d. Density compared to water- e. They all undergo the following reaction: _____, which products alway are: _________, _________ and __________. Provide an example here: f. Main use is as ______. g. Melting and boiling points are _______.
Shape, melting point & solubility (2.5 pts) When melting or boiling a substance (both of which...
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The substance oxygen has the following properties: normal melting point: 54.8 K normal boiling point: 90.2...
The substance oxygen has the following properties: normal melting point: 54.8 K normal boiling point: 90.2 K triple point: 1.50X10-3 atm. 54.4K critical point: 49.8 atm, 154.6K At temperatures above 154.6 K and pressures above 49.8 atm, O2 is a __ 02 does not exist as a liquid at pressures below atm. O2 is a O, is a at 28.8 atm and 47.8 K. at 1.00 atm and 65.2 K. at 1.50~10-3 atm and 96.8 K. A
Rank the following group of alkanes in order of increasing boiling point.
Rank the following group of alkanes in order of increasing boiling point.
The substance fluorine has the following properties normal melting point 53.5 K normal boiling point85.0 K...
The substance fluorine has the following properties normal melting point 53.5 K normal boiling point85.0 K triple point 1.6*10m, 53.4 K Critical point 55 atm, 144.1 K A sample of fluorine at a pressure of 1.00 am and a temperature of 66.8 K is cooled at constant pressure to a temperature of 49.3 K. Which of the following are true? Choose all that apply One or more phase changes will occur The final state of the substance is a liquid...
. The substance fluorine has the following properties: normal melting point: 53.5 K normal boiling point:...
.
The substance fluorine has the following properties: normal melting point: 53.5 K normal boiling point: 85.0 K triple point: 1.6*10-4 atm, 53.4 K critical point: 55 atm, 144.1 K A sample of fluorine is initially at a pressure of 56.1 atm and a temperature of 96.9 K. The pressure on the sample is reduced to 1.60*10-4 atm at a constant temperature of 96.9 K. Which of the following are true? Choose all that apply The liquid initially present will...
as the number of carbon increases, the boiling point of alkanes decreases. true or false
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The substance neon has the following properties: normal melting point: 24.5 K normal boiling point: 27.1...
The substance neon has the following properties: normal melting point: 24.5 K normal boiling point: 27.1 K triple point: critical point: 0.425 atm, 24.4 K 26.2 atm, 44.4 K A sample of neon is initially at a pressure of 31.4 atm and a temperature of 39.2 K. The pressure on the sample is reduced to 0.425 atm at a constant temperature of 39.2 K. Which of the following are true? Choose all that apply O The gas initially present will...
The substance sulfur dioxide has the following properties: normal melting point: 200.4 K normal boiling point:...
The substance sulfur dioxide has the following properties: normal melting point: 200.4 K normal boiling point: 263.1 K triple point: 1.7×10-3 atm, 197.6 K critical point: 78 atm, 430.7 K A sample of sulfur dioxide is initially at a pressure of 81.1 atm and a temperature of 275.0 K. The pressure on the sample is reduced to 1.70×10-3 atm at a constant temperature of 275.0 K. Which of the following are true? a. The final state of the substance is...
The melting point of substance X is -20 degrees Celsius and the boiling point is 90...
The melting point of substance X is -20 degrees Celsius and the boiling point is 90 degrees Celsius. How many Celsius degrees are there between the melting point and the boiling point? 20 70 90 110
Shape, melting point & solubility (2.5 pts) When melting or boiling a substance (both of which are physical changes), which kinds of attractions may be broken? Circle all that apply. hydrogen bonding covalent bonds dipole-dipole London forces vs. If I told you that only one of these molecules is a solid at room temperature, which one is that more likely to be? How can you tell from the structure? Circle the hydrophilic portion of the molecules above and put a...
The substance oxygen has the following properties: normal melting point: 54.8 K normal boiling point: 90.2 K triple point: 1.50X10-3 atm. 54.4K critical point: 49.8 atm, 154.6K At temperatures above 154.6 K and pressures above 49.8 atm, O2 is a __ 02 does not exist as a liquid at pressures below atm. O2 is a O, is a at 28.8 atm and 47.8 K. at 1.00 atm and 65.2 K. at 1.50~10-3 atm and 96.8 K. A
Rank the following group of alkanes in order of increasing boiling point.
The substance fluorine has the following properties normal melting point 53.5 K normal boiling point85.0 K triple point 1.6*10m, 53.4 K Critical point 55 atm, 144.1 K A sample of fluorine at a pressure of 1.00 am and a temperature of 66.8 K is cooled at constant pressure to a temperature of 49.3 K. Which of the following are true? Choose all that apply One or more phase changes will occur The final state of the substance is a liquid...
.
The substance fluorine has the following properties: normal melting point: 53.5 K normal boiling point: 85.0 K triple point: 1.6*10-4 atm, 53.4 K critical point: 55 atm, 144.1 K A sample of fluorine is initially at a pressure of 56.1 atm and a temperature of 96.9 K. The pressure on the sample is reduced to 1.60*10-4 atm at a constant temperature of 96.9 K. Which of the following are true? Choose all that apply The liquid initially present will...
The substance neon has the following properties: normal melting point: 24.5 K normal boiling point: 27.1 K triple point: critical point: 0.425 atm, 24.4 K 26.2 atm, 44.4 K A sample of neon is initially at a pressure of 31.4 atm and a temperature of 39.2 K. The pressure on the sample is reduced to 0.425 atm at a constant temperature of 39.2 K. Which of the following are true? Choose all that apply O The gas initially present will...
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