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Which one has a higher boiling point a dispersion force or hydrogen bond or covalent bond or ionic bond?
Wiki User
∙ 13y ago
Compounds with fully ionic bonds have higher boiling points than compounds without this feature, except for a few unusual, extensively three-dimensionally-bonded covalent compounds such a diamond and silica.
Wiki User
∙ 13y ago
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Why hydrogen bromide has higher boiling point than hydrogen fluoride?
Hydrogen fluoride has higher boiling point than hydrogen bromide ( HF 19.5 C HBr -66 C) because in hydrogen fluoride has two kinds of forces, one is hydrogen bonding and other is London dispersion forces. In Hydrogen bromide there are only london dispersion forces. These are weaker than hydrogen bonds therefore HF has the higher boiling pint.
Does a large covalent molecule generally have a low boiling point?
Boiling point of a molecular substance depends on the intermolecular forces - forces that attracts a molecule to its neighbours of the same kind.For a covalent molecule, the possible intermolecular forces aredispersion forcesdipole-dipole bonding andhydrogen bondingAs the strength and magnitude of the intermolecular forces increase, the boiling point increases because it becomes increasingly difficult to break the bonds and requires more energy for the same.Since different types of intermolecular bonding are present, the answer to the question cannot be given in a single sentence.Analyzing all types:If, for large covalent molecules, the intermolecular forces increase, then the boiling point will increase.If only dispersion forces are present, then as the number of electrons increases (and consequently the mass), so will the dispersion forces. Therefore, boiling points will be higher.If only dipole-dipole bonding is present, then, as the molecule increases in size, the charge is dispersed in the molecule, strength of the polarity decreases and thus the intermolecular forces decreases. Therefore, boiling point decreases.If only hydrogen bonding were present, the strength of the bond will depend on the halogen atom with which hydrogen forms a bond. It does not depend on the mass/size of the molecule.However, dipole-dipole and hydrogen bonding can never exist in a substance on their own but with dispersion forces.Therefore, as the mass/size of a covalent molecule increases, the dispersion forces increase and will lead to a higher boiling point independent of hydrogen bonding and the decrease in dipole-dipole bonding will be compensated by an equal or higher increase in dispersion forces.Large covalent molecules do not have low boiling points (in comparison with small covalent molecules). But boiling point of covalent molecules, in general, is less than that of ionic molecules.
Why does hydrogen iodide have a higher boiling temperature than hydrogen bromide?
There is no hydrogen bonding in HBr and HI. The intermolecular forces are London dispersion forces- HI has more electrons, so more instantaneous induced dipole-dipole interaction- more intermolecular force- and therefore a higher boiling point.
Does water have a higher than expected boiling point because of hydrogen and oxygen forming a single covalent bond?
Water has a higher boiling point than would be expected for a covalent compound of that molecular weight, because the water molecule is highly polar, and forms what are known as coordinate covalent bonds between water molecules. The polarity of the water molecule is the result of its shape, not the result of the single covalent bond that exists between the oxygen atom and each of the two hydrogen atoms.
Can you predict boiling point of a compound with the help of boiling points of elements in it?
The intra and inter molecular forces will help to determine the higher boiling.Intra molecular forces are Polar/Non-polar covalent bonds and ionic bonds. Covalent bonds are stronger than ionic bonds.Polar covalent bonds will have a higher boiling point because non-polar covalent bonds are only affected by London forces.Intermolecular forces are hydrogen bonding, diapole-diapole and London. All molecules have London forces.Also the higher the electro-negativity the higher the boiling point.If all of the intra and inter molecular forces are the same, refer to the electro-negativity and size. The greater the electro-negativity and size, the higher the boiling point.
Why hydrogen bromide has higher boiling point than hydrogen fluoride?
Hydrogen fluoride has higher boiling point than hydrogen bromide ( HF 19.5 C HBr -66 C) because in hydrogen fluoride has two kinds of forces, one is hydrogen bonding and other is London dispersion forces. In Hydrogen bromide there are only london dispersion forces. These are weaker than hydrogen bonds therefore HF has the higher boiling pint.
Does a large covalent molecule generally have a low boiling point?
Boiling point of a molecular substance depends on the intermolecular forces - forces that attracts a molecule to its neighbours of the same kind.For a covalent molecule, the possible intermolecular forces aredispersion forcesdipole-dipole bonding andhydrogen bondingAs the strength and magnitude of the intermolecular forces increase, the boiling point increases because it becomes increasingly difficult to break the bonds and requires more energy for the same.Since different types of intermolecular bonding are present, the answer to the question cannot be given in a single sentence.Analyzing all types:If, for large covalent molecules, the intermolecular forces increase, then the boiling point will increase.If only dispersion forces are present, then as the number of electrons increases (and consequently the mass), so will the dispersion forces. Therefore, boiling points will be higher.If only dipole-dipole bonding is present, then, as the molecule increases in size, the charge is dispersed in the molecule, strength of the polarity decreases and thus the intermolecular forces decreases. Therefore, boiling point decreases.If only hydrogen bonding were present, the strength of the bond will depend on the halogen atom with which hydrogen forms a bond. It does not depend on the mass/size of the molecule.However, dipole-dipole and hydrogen bonding can never exist in a substance on their own but with dispersion forces.Therefore, as the mass/size of a covalent molecule increases, the dispersion forces increase and will lead to a higher boiling point independent of hydrogen bonding and the decrease in dipole-dipole bonding will be compensated by an equal or higher increase in dispersion forces.Large covalent molecules do not have low boiling points (in comparison with small covalent molecules). But boiling point of covalent molecules, in general, is less than that of ionic molecules.
Why does hydrogen iodide have a higher boiling temperature than hydrogen bromide?
There is no hydrogen bonding in HBr and HI. The intermolecular forces are London dispersion forces- HI has more electrons, so more instantaneous induced dipole-dipole interaction- more intermolecular force- and therefore a higher boiling point.
Does water have a higher than expected boiling point because of hydrogen and oxygen forming a single covalent bond?
Water has a higher boiling point than would be expected for a covalent compound of that molecular weight, because the water molecule is highly polar, and forms what are known as coordinate covalent bonds between water molecules. The polarity of the water molecule is the result of its shape, not the result of the single covalent bond that exists between the oxygen atom and each of the two hydrogen atoms.
WHY ammonia has higher boiling point then phosphine?
NH3 exhibits hydrogen bonding in addition to dispersion forces. This significantly increases the intermolecular force, and raises the boiling point. PH3 does not exhibit hydrogen bonding and the dominant intermolecular force holding these molecules together is dispersion forces. (Dispersion forces also known as Van Der Waal Force)
Can you predict boiling point of a compound with the help of boiling points of elements in it?
The intra and inter molecular forces will help to determine the higher boiling.Intra molecular forces are Polar/Non-polar covalent bonds and ionic bonds. Covalent bonds are stronger than ionic bonds.Polar covalent bonds will have a higher boiling point because non-polar covalent bonds are only affected by London forces.Intermolecular forces are hydrogen bonding, diapole-diapole and London. All molecules have London forces.Also the higher the electro-negativity the higher the boiling point.If all of the intra and inter molecular forces are the same, refer to the electro-negativity and size. The greater the electro-negativity and size, the higher the boiling point.
Do ionic compounds have lower boiling points than polar covalent?
Ionic compounds have higher boiling points than covalent compounds.
Why is the boiling point of water higher than the boiling point of argon?
Argon is a monoatomic gas, held by weak van der Waals forces of attraction. Water is a polar covalent molecule held together by stronger hydrogen bonds and hence have higher boiling point than argon
Which has a higher boiling point HI or HCl?
HI has a higher boiling point because of the dipole-dipole Intermolecular forces as well as the dispersion forces, which become more evident with molecular weight, which will dominate over the dipole-dipole forces, so HCl has a lower boiloing point.
Why boiling point of nitrogen is less than oxygen although it forms more covalent bonds?
Oxygen has higher dispersion forces due to the fact that it has more electrons. Because there are more electrons, there is more force and attraction involved.
Which statement explains why H2O has a higher boiling point than N2?
In liquid ammonia one hydrogen atom from an adjacent molecule can form an intermolecular hydrogen bond with the nitrogen atom of the central ammonia molecule. With an average of only one intermolecular bond per ammonia molecule, less thermal energy is required to break the liquid ammonia into individual gas phase molecules. Therefore a lower boiling temperature results. In the case of liquid water, one hydrogen atom from each of two adjacent water molecules can form an intermolecular hydrogen bond with each lone pair on the oxygen atom of the central water molecule. As such, a greater amount of thermal energy is required to break the extensive hydrogen bonding network and a higher boiling temperature results.
Why does carbon dioxide have a very low boiling point?
CO2 is a compound made of non-metals. Compounds made of non-metals are called covalent molecular substances. Covalent molecular substances have a low melting and boiling point because there are weak intermolecular forces between the molecules of the compound and needs only a little thermal energy to separate the particles. But its only the IM forces that are broken not the covalent bonds. There you go, i hope that helped
