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:
<u>1-Propanol is more likely to be a liquid at 50 than is methoxyethane (ethyl methyl ether). </u>
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.
<u>Methoxyethane (ethyl methyl ether) is more soluble in water than is 1-propanol.</u>
This false:
Propanol has a hydrogen bonding. <u>
</u>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.
<u>Methoxyethane (ethyl methyl ether) is more likely to be a liquid at 50 °C50 °C than is 1-propanol</u>
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.
<u>Alcohol molecules can form hydrogen bonds among themselves;ether molecules cannot</u>
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.
<u>Methoxyethane (ethyl methyl ether) has a higher boiling point than 1-propanol.</u>
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.
= 0.0725 = 
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