When sulfur dioxide is boiled, it is the weak intermolecular forces which are broken and not the strong covalent bonds. Only a small of amount of energy is required to break the intermolecular forces so the boling point is low.
Why does Sulphur hexafluoride has a low boiling point?
Like other covalent substances, there are strong covalent bonds within the molecules but only weak (Van der Waals’) forces between molecules, so that it has a low boiling point and melting point (actually it sublimes, at -63.7°C).
Why is the boiling point of Sulphur dioxide higher?
SO2 is bent and polar while SO3, CH4 and CO2 are all non-polar. ... SO3 is also planar. LDF forces increase as the size of the molecule increases and as the surface area of contact between molecules increases. As indicated by the higher boiling point for SO3, LDF forces for SO3 are stronger than the dipole forces in SO2 .
Why does sulfur have a higher melting point than sulfur dioxide?
The dipole-dipole forces between SO2 molecules are stronger than the induced dipole-induced dipole forces between CO2 molecules. Hence, sulfur dioxide has a higher boiling point.
Why does glass melt at a lower temperature?
Glass is made from silicon dioxide. (a) Silicon dioxide has a very high melting point. Other substances are added to silicon dioxide to make glass. Glass melts at a lower temperature than silicon dioxide .
Why is sf6 used to insulate gas?
SF 6 gas is extremely chemically stable, non-flammable and highly electronegative , with an excellent dielectric property of approximately 2.5 times more than air. Therefore, it is commonly used in electrical switchgear, transformers and substations as an electrical insulation, arc quenching and cooling medium.
Is sulfur dioxide toxic to humans?
Sulfur dioxide is a severe irritant to the respiratory tract, eyes, mucous membranes, and skin . Exposure to high doses can cause pulmonary edema, bronchial inflammation, and laryngeal spasm and edema with possible airway obstruction. There is no antidote for sulfur dioxide.
What is the strongest intermolecular force?
The strongest intermolecular force is hydrogen bonding , which is a particular subset of dipole-dipole interactions that occur when a hydrogen is in close proximity (bound to) a highly electronegative element (namely oxygen, nitrogen, or fluorine).
What is the strongest intermolecular force in CH2Cl2?
CH2Cl2 is therefore a polar molecule, and its strongest intermolecular forces are dipole-dipole forces . CH3OH has a highly polar O-H bond. The O atom has a high δ- charge, and the H of the OH has a high δ+ charge.
Is sulfur an electrical conductor?
Step by step solution: Sulphur is a non-metal because it is consistent with three physical properties listed for non-metals. It is a poor conductor of heat and electricity, because electrons are not free to move. ... Note: Sulphur in ionic form conducts electricity, because their ions are free to move from place to place.
Does HCl have a high melting point?
Hydrogen chloride (HCl) has a melting point of -114.2 °C . Sodium chloride (NaCl) has a melting point of 801 °C.
At what temperature does glass break?
When heated, thin glass begins to crack and typically breaks at 302–392 degrees Fahrenheit . Glass bottles and jars are usually not affected by ambient, refrigeration or warm temperatures. However, high heat (>300°F) and excessive thermal variations can cause glass to shatter or break.
At what temp does glass melt?
Glass can only be molded at very high temperatures. It completely melts/liquifies at approximately 1400 °C to 1600 °C depending on the composition of glass. Glass is made from a variety of substances, depending on the intent of use.
At what temperature does glass become pliable?
When you heat glass to a temperature of 1300 to 1350 degrees F , the surface of the glass becomes soft enough to just start to melt. By heating to a point where just the very surface of the glass reaches this temperature, you can produce a smooth, shiny effect.
Why is SF6 a powerful greenhouse gas?
SF6 is known for its isolating potential in electricity . As such, it is a favoured material for energy infrastructures. When it comes to total consumption, yearly SF6 emissions are equivalent to the annual CO 2 emissions produced by approximately 100 million cars.
