Why CH3CH2CH3 has higher boiling point than CH3CH3?
The bigger molecule has more interactions and hence the higher b.p. CH3CH2OCH2CH3 is a bigger molecule than CH4 and CH3CH3, so has more dispersion forces. It also has dipole-dipole forces due to the polarised C-O bonds. CH3OH and CH3CH2OH have hydrogen bonds due to the very electronegative O atom bonded to the H atom.
How do you tell which substance will have a higher boiling point?
In general, larger molecules have higher boiling points than smaller molecules of the same kind, indicating that dispersion forces increase with mass, number of electrons, number of atoms or some combination thereof.
Which compound has the highest boiling point CH3CH2CH3?
Ethyl alcohol
These hydrogen bonds are responsible for the very high boiling point of alcohols. Ethyl alcohol undergoes extensive hydrogen bonding and thus has the highest boiling point.
Which of the following will have a higher boiling point?
The chemical element with the lowest boiling point is Helium and the element with the highest boiling point is Tungsten. For straight-chain alkanes, the alkane with the greatest molecular weight (the greatest number of carbon and hydrogen atoms) will have the highest boiling point.
Does CH3CH3 have a high boiling point?
CH3CH3. It has a greater mass and number of electrons which causes greater dispersion forces and a higher boiling point.
Does CH4 have a high boiling point?
-161.6 °C
Methane/Boiling point
Which compound has the lowest boiling point group of answer choices?
1 Expert Answer The one with the weakest IMF will have the lowest boiling point. CH4 has only dispersion forces while all the others have dispersion PLUS either dipole-dipole (HCl, H2S, NH3), and/or hydrogen bonding (NH3). So, CH4 will have the lowest boiling point.
Does CH3CH2CH2CH2CH2CH3 have a high boiling point?
Dipole–Dipole forces due to hydrogen bonding of F 2, Cl 2 and Br 2 are 85 239. Same boiling point is given in Celsius or Fahrenheit, the normal boiling point hexane, CH3CH2CH2CH2CH2CH3, has highest.
Which liquid has highest boiling point?
1 Answer
- Acetone 56.0 ∘C .
- Ethanol 78.5 ∘C .
- Peanut oil 230 ∘C .
- Glycerol 290.0 ∘C .
Which compound has the highest boiling point?
Propionamide has the strongest intermolecular forces, It should have the highest boiling point.
Why is KBr boiling point so high?
For KBr: The compound involves a metal cation (K+) and a nonmetal anion (Br-). Hence, KBr is an ionic compound and possesses ionic bonding. Ionic bond is stronger than the covalent bonds present in CH3Br. Therefore, KBr is expected to have a higher boiling point than CH3Br.
Why does CH3CH2COOH have a higher boiling point?
Why does the CH3CH2CH2CH2OH have a high boiling point than CH3CH2CH2CH2CH3? n- butanol, or butyl alchohol, and pentane boil at 117 C and 36 C, respectively. They differ in the ability of the n-butanol to bond with itself. Hydrogen bonds are the strongest bonds,taking more energy (higher temperature) to break, thus the higher boiling point.
Which is the compound with the highest boiling point?
2OH have hydrogen bonds due to the very electronegative O atom bonded to the H atom. These H-bonds are much stronger than the dispersion and dipole-dipole forces in the other compounds and hence these two compounds have the highest boiling points. CH 3CH 2OH has more dispersion forces than CH 3OH, so it has the highest boiling point.
Why is the boiling point of alcohol higher than that of ether?
The boiling point of alcohol is more than that of ether and the alkane due to the presence of hydrogen bonds, which results in higher intermolecular attractions in the propanol molecule. Ethers have dipole-dipole interactions, which are weaker than hydrogen bonds and hence have lesser boiling points than comparable alcohols.
Why do alkanes have lower boiling points than alcohols?
Ethers have dipole-dipole interactions, which are weaker than hydrogen bonds and hence have lesser boiling points than comparable alcohols. In the case of alkanes, there are no hydrogen bonds or dipole-dipole interactions and giving them the weakest bonds and thus, the lowest boiling points.