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Hydrogen fluoride (HF) has a higher boiling point than hydrogen bromide (HBr) as a result of hydrogen bonding between HF molecules, which is stronger than the Van der Waals forces present in HBr. The hydrogen bonding in HF results from the high electronegativity difference between hydrogen and fluorine atoms, leading to a stronger intermolecular attraction and higher boiling point.
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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.
Which molecule has a higher boiling point Cl2 or Br2?
HCL has a higher boiling point compared to HBr This is due to difference in electronegativity. H - 2.1 Cl - 3.0 Br - 2.8 The difference for HCl is 0.9, the difference for HBr is 0.7. The larger the difference in electronegavity means the stronger the bond. Large difference means greater attraction hence more energy is needed to overcome this bond.
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.
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.
Which is faster to effuse HCl or HBr?
Hydrogen chloride (HCl) will effuse faster than hydrogen bromide (HBr) because HCl has a lower molar mass than HBr. This means HCl particles have higher average speeds, allowing them to pass through a small opening more quickly than HBr particles.
Why is the boiling point of HI higher than HBr?
This is to do with the intermolecular forces in the two compounds. There are no hydrogen bonds between the molecules of either compound, since Br and I are not electronegative enough to polarise the molecules sufficiently. But since HI molecules contain more electrons than HBr, there are increased van der Waals forces in HI. For the same reason HBr has a higher boiling point than HCl, but HF has a higher boiling point than HCl, HBr or HI because of hydrogen bonding.
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.
Which molecule has a higher boiling point Cl2 or Br2?
HCL has a higher boiling point compared to HBr This is due to difference in electronegativity. H - 2.1 Cl - 3.0 Br - 2.8 The difference for HCl is 0.9, the difference for HBr is 0.7. The larger the difference in electronegavity means the stronger the bond. Large difference means greater attraction hence more energy is needed to overcome this bond.
What is the boiling and melting point of HBR?
Hydrobromic Acid (HBr) Melting point: -11 °C (47-49% w/w aq.) Boiling point: 122 °C at 700 mmHg (47-49% w/w aq.)
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 HCl a lower boiling point than either HF or HBr?
Yes, it is true: -85,1 0C at 1, 013 bar.
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.
Which is faster to effuse HCl or HBr?
Hydrogen chloride (HCl) will effuse faster than hydrogen bromide (HBr) because HCl has a lower molar mass than HBr. This means HCl particles have higher average speeds, allowing them to pass through a small opening more quickly than HBr particles.
Which has a lower melting point HFor HBr?
HBr has a lower melting point of -86.8 degrees C. HF has a melting point of -83 degrees C.
Which has the highest boiling point H2S or H2Se or H2O?
Water has the highest boiling point, as the hydrogen bonds between the molecules need more energy to break than the hdyrogen bonds in H2S, and H2Se, as Oxygen is much more electronegative than Sulphur of Selenium, so it makes the molecules more polar.
Write the expression for Ka for the dissociation of HBr?
Ka = [H+].[Br-] / [HBr] However the value of this expression is very high, because HBr is a STRONG acid, meaning that much more than 99.9% of the HBr molecules in water are protolized (ionized), making [H+] and [Br-] equal to the original (added) HBr amount, and the [HBr]-value nearly zero.
Which gas will deviate easier H2 or HBr?
Hydrogen gas (H2) will deviate easier than hydrogen bromide gas (HBr) due to its lower molecular mass and lighter weight. This leads to H2 molecules traveling at higher speeds and deviating more easily when subjected to external forces.
