Respuesta :
Answer:
Following statements are true:
1-Propanol is more likely to be a liquid at 50 than is methoxyethane (ethyl methyl ether).
Alcohol molecules can form hydrogen bonds among themselves;ether molecules cannot
Explanation:
1-Propanol is more likely to be a liquid at 50 than is methoxyethane (ethyl methyl ether).
This is true
Propanol has a boiling temperature (this is the temperature at which the vapor pressure of a liquid equals the pressure surrounding the liquid and the liquid changes into a vapor) of 97-98 °C while methoxyethane a boiling point of 7.4 °C.
This means at 50 °C propanol is liquid but methoxyethane at 50°C is a gas.
Methoxyethane (ethyl methyl ether) is more soluble in water than is 1-propanol.
This false:
Propanol has a hydrogen bonding. The OH on the alcohol can form a hydrogen bond (as a hydrogen acceptor and donor). Water can hydrogen bond. This means alcohol is will disolve in water. ( Remember Like dissolves like). So, when you have a molecule that can act as a donor and acceptor you end up with a much better interaction with water and end up with something that is more miscible. Ethers are only acceptors since they do not have a hydrogen attached to the oxygen. So, they can only accept a proton from water.
Methoxyethane (ethyl methyl ether) is more likely to be a liquid at 50 °C50 °C than is 1-propanol
This is false because propanol has a boiling temperature (this is the temperature at which the vapor pressure of a liquid equals the pressure surrounding the liquid and the liquid changes into a vapor) of 97-98 °C while methoxyethane a boiling point of 7.4 °C.
This means at 50 °C propanol is liquid but methoxyethane at 50°C is a gas.
Alcohol molecules can form hydrogen bonds among themselves;ether molecules cannot
This is true because:
Ether molecules cannot form hydrogen bonding between themselves because the oxygen atom is attached to 2 alkyl or aryl groups R-O-R, e.g diethyl ether, or Ar-O-Ar, such as diphenylether (C6H5)2O
C2H5-O-C2H5,m or dimethyl ether CH3—O-CH3. however they can between ether molecules and other molecules containing hydrogen atoms, such as alcohols, CH3OH. Any molecule with the hydrogen attached to a strongly electronegative element e.g Nitrogen or fluorine.
Methoxyethane (ethyl methyl ether) has a higher boiling point than 1-propanol.
This is false: Methoxyethane has a boiling point of 7.4 °C while propanol has a boiling point of 97-98 °C. This can be shown because at roomtemperature Methoxyethane is a gas but propanol is a liquid.
The following statement regarding alcohol and ether are true:
(A) 1-Propanol is more likely to be a liquid at 50 °C than is methoxyethane (ethyl methyl ether).
(D) Alcohol molecules can form hydrogen bonds among themselves; ether molecules cannot.
What are alcohol and ethers?
Alcohol, is an organic compound whose carboxyl group is attached to the carbon atom.
Any organic molecule with an oxygen atom linked to two alkyl or aryl groups is known as an ether.
Propanol has a boiling point 97 to 98°C and methoxyethane has boiling point t 7.4 °C, thus propanol more likely to be liquid.
Ether molecule cannot form a hydrogen bond because they have an oxygen atom attached to an aryl or alkyl group.
Thus, option (A) and (D) are true.
Learn more about ethers, here:
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