Last Updated on September 29, 2022 by amin
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Which has the higher boiling point HF or HCL why chegg?
HCL has the higher boiling point because it exhibits stronger dipole-dipole forces between molecules. … HF has the higher boiling point because it exhibits hydrogen bonding.
Why HF has the highest boiling point?
Hydrogen bonding is the strongest intermolecular force. Due to strong intermolecular forces the molecules of HF will be tightly packed in a lattice. Thus HF will have the highest boiling point since the boiling point of a system depends upon the intermolecular interactions.
Which compound has higher boiling point?
Large molecules have more electrons and nuclei that create van der Waals attractive forces so their compounds usually have higher boiling points than similar compounds made up of smaller molecules. It is very important to apply this rule only to like compounds.
Which Has The Higher Boiling Point Hf Or Hcl? Why??
Since the van der Waals bond is stronger than hydrogen HF will have a higher boiling temperature. b) The intermolecular bonding for HF is covalent whereas for HCL the intermolecular bonding is hydrogen. Since the covalent bond is stronger than van der Waals HF will have a higher boiling temperature.
What is the melting point of HF?
-83.6 °CSee also how did the north achieve victory in the civil war?
Which compound has the highest normal boiling point?
Propionamide has the strongest intermolecular forces It should have the highest boiling point.
Which has higher boiling point HF or HCL?
a) The intermolecular bonding for HF is van der Waals whereas for HCL the intermolecular bonding is hydrogen. Since the van der Waals bond is stronger than hydrogen HF will have a higher boiling temperature. … Since the hydrogen bond is stronger than van der Waals HF will have a higher boiling temperature.
Which molecular substance will have the lowest vapor pressure?
Correct answer:See also how many moles of al2o3 can be produced from the reaction of 10.0 g of al and 19.0 g of o2? Explanation: The molecule with the lowest vapor pressure is the molecule with the strongest intermolecular forces. All of these molecules except pentane have the capability to hydrogen bond.
Which gas has highest boiling point in air?
Of the main components of air oxygen has the highest boiling point and therefore is less volatile than nitrogen and argon.
Does HF have hydrogen bonding?
In HF each molecule has one hydrogen atom which can form a hydrogen bond and there are three lone pairs of electrons on the fluorine atom. The total number of hydrogen bonds is limited by the number of hydrogen atoms and on average each HF molecule will be involved in two hydrogen bonds.
Which molecule has the highest vapor pressure?
What type of bond is HF?
polar covalent bondsThe hydrogen fluoride (HF) molecule is polar by virtue of polar covalent bonds in the covalent bond electrons are displaced toward the more electronegative fluorine atom. The polar covalent bond HF.
Which compound has lowest boiling point?
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 HCl have a higher boiling point than NaCl?
The ionic bonds are stronger due to the complete transfer of an electron from the cation to anion. Sodium chloride is an ionic compound while hydrochloric acid is a covalent compound. … Hence NaCl has a higher boiling point.
Does higher vapor pressure mean higher boiling point?
The vapor pressure of a liquid lowers the amount of pressure exerted on the liquid by the atmosphere . As a result liquids with high vapor pressures have lower boiling points.
Why does HF have hydrogen bonding but not HCl?
To form an inert gas electron configuration each atom in HCl requires one more electron. … The size of the atom considering its electronegativity is such that its electron density is too low for hydrogen bonds to form. This is why while HF does HCl does not demonstrate hydrogen bonding.
Which of the following has highest boiling point?
Propan-1-ol has the highest boiling point because propan-1-ol contains H-bonding in their structure. Hence Propan – 1 – ol has the highest boiling point amongst the given options.
Why HCl has low melting point?
HCl has a simple molecular structure. There are weak intermolecular forces between the molecules. These intermolecular forces need to be broken to melt HCl this requires a small amount of energy and therefore HCl has a relatively low melting point.
The boiling point of `HCI` is less than that of `HF` .
Why is hydrochloric acid considered an acid?
When HCl molecules dissolve they dissociate into H+ ions and Cl– ions. HCl is a strong acid because it dissociates almost completely. By contrast a weak acid like acetic acid (CH3COOH) does not dissociate well in water – many H+ ions remain bound-up within the molecule.
Why does CHBr3 have a higher boiling point than chcl3?
CHBr3 has more electrons so it has the higher boiling point.
How does vapor pressure depends on boiling point?
The higher the vapour pressure of a liquid at a given temperature the lower the standard boiling point (i.e. the boiling point at atmospheric pressure) of the liquid.
HF has more Boiling point than HCl. Give reason||p-block elements||ASN CHEMISTRY
Which hydrocarbon has the lowest boiling point?
For any group of isomeric alkanes the most branched isomer has the lowest boiling point. The normal alkane has the highest boiling point.
…
3.7 Physical Properties of Alkanes.
| Hydrocarbon | Boiling Point (°C) | Density (g/mL) |
|---|---|---|
| Propane | 42.1 | 0.690 |
| Butane | −0.5 | 0.711 |
| Pentane | 36.1 | 0.6262 |
| Hexane | 68.9 | 0.6603 |
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Which of the following hydrogen halide has the highest boiling point?
Why is the boiling point of HCl lowest while that of HF highest?
HF shows H-bonding possess a higher boiling point or less volatile nature. HCl has the least boiling point due to the small dispersion intermolecular forces.
What determines a boiling point?
The boiling point of a liquid is reached when the total vapor pressure of the liquid is equivalent to the atmospheric pressure. The temperature at which this occurs is called the boiling point.
Why does F2 have a low boiling point?
Why does HF have a higher boiling point than F2?
The HF molecule is a polar molecule: H has a partially positive charge and F has a partially negative charge. HF has a higher boiling point than F2 because more effort is needed to make H and F atoms stop being close to each other (electrostatic attraction causes close proximity).
Which of the following will have the highest boiling point as seen in a HF B HCl C br2 D i2?
HF has the highest boiling point. All the hydrogen halides have van der Waals forces of attraction between them which…
What happens when HCl is boiled?
When it has a concentration of 25% or more it is a fuming (hydrogen chloride gas hydrochloric acid gas) strong acid. … The inhalation of a large quantity of hydrochloric acid will cause intoxication and result in death. ・When hydrochloric acid is heated it generates a large quantity of hydrochloric acid fumes.
What is the boiling point of HCl?
-85.05 °C
Which of the following has highest boiling point HF HCL?
If we talk about the HF it has strong hydrogen bonding thus has the highest boiling point. > Therefore HF exists in the liquid state and HI HBr and HCl exists in the gaseous state.
Which of the following has a higher boiling point and why?
Water has the highest boiling point due to the following reasons: It is a polar molecule. The hydrogen bonding exists among the molecules of water.
Which Compound Has a Higher Boiling Point? Intermolecular Force Boiling Point Relationship Examples
Why does higher vapor pressure mean lower boiling point?
Lowering the vapor pressure of a substance has an obvious effect on boiling point the boiling point goes up. The BP increases because more energy is required for the solvent’s vapor pressure to reach the external pressure. … Thus the temperature of the boiling point must be increased.
Does HF have a high boiling point?
19.5 °C
What is the vapor pressure of HF?
The vapor pressure of HF has been redetermined between 273 and 303°K and is represented by log10P(torr) = 1·3428 − 947·26/T + 3·0233 log10T.