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Why do ionic compounds tend to have higher boiling points than molecular compounds have?
Wiki User
∙ 12y ago
Ionic. To boil it you have to first melt the lattice- and then put enough thermal energy into the melt to cause ions to "break" free.
In a molecular solid/liquid (discrete molecules not giant!)- you are only breaking intermolecular forces to cause boiling and these are weaker than electrostatic attraction between ions..
Wiki User
∙ 11y ago
Wiki User
∙ 11y agoIonic. To boil it you have to first melt the lattice- and then put enough thermal energy into the melt to cause ions to "break" free.
In a molecular solid/liquid (discrete molecules not giant!)- you are only breaking intermolecular forces to cause boiling and these are weaker than electrostatic attraction between ions..
Wiki User
∙ 11y agoIonic. To boil it you have to first melt the lattice- and then put enough thermal energy into the melt to cause ions to "break" free.
In a molecular solid/liquid (discrete molecules not giant!)- you are only breaking intermolecular forces to cause boiling and these are weaker than electrostatic attraction between ions..
Wiki User
∙ 13y agoNo, they usually have lower boiling points (if they boil at all; some decompose before they reach their boiling point, or even their melting point).
Converting an ionic compound into the gas phase requires overcoming the electrostatic force between the charged particles. This is orders of magnitude greater than the van der Waals forces between molecules.
Wiki User
∙ 12y agoIonic compounds have stronger bonds, that is, more energy is required to break an ionic bond than a covalent bond, and more energy is available at higher temperatures.
Wiki User
∙ 8y agoThe ionic bond is stronger than a covalent bond.
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How are the melting points of ionic compounds different from molecular compounds?
Very much higher.
What properties do most covalent compounds have in common?
Most molecular compounds do not conduct electricity and have low melting points.
What are two major characteristics of molecular compounds?
Low melting and boiling points. Some are polar and some are nonpolar. Those that are polar will dissolve in water. They also do not conduct electricity.
What compounds would have the highest boiling points?
ionic
What is the top of an oil fractionating column is?
The bottom is where the compounds with the highest boiling points are found. The ones with the lowest boiling points will be found at the top of the column.
Why does 0.300 M KCl have a higher boiling point that 0.500 M glucose?
KCl is an ionic compound and glucose is a molecular compound. Ionic compounds have higher boiling points than molecular compounds.
How do ionic compounds and molecular compounds differ in their relative melting and bioling points?
Ionic compounds have higher melting and boiling points than molecular compounds do. The electronegativity difference in ionic compounds makes their bond much stronger.
How are the melting points and the boiling points of molecular compounds different from ionic compounds?
Ionic bonds are significantly resistant to heat, while molecular bonds are broken more easily with the addition of heat energy. Due to this, ionic compounds have much higher boiling points than molecular substances in most cases.
Molecular compounds have relatively high boiling points?
false they tend to have low boiling points
Do ionic compounds have lower boiling points than polar covalent?
Ionic compounds have higher boiling points than covalent compounds.
Molecular compounds boil at much higher temperatures than do ionic compounds true or false?
This is false. Ionic compounds have higher boiling points than molecular compounds. For example, the boiling point of the ionic compounds copper(II) oxide, CuO, and sodium chloride, NaCl are 2,000 degrees C and 1,413 degrees C, respectively. The boiling point of the molecular compounds carbon tetrachloride, CCl4, and water, H2O are 76.72 degrees C and 100 degrees C, respectively.
How are the properties of molecular compounds poor conducters of electricity?
Because have lower melting points and boiling points
Why do molecular compounds have low melting points and low boiling points relative ionic substances?
The bonds in the molecule are weaker.
How are ionic and covalent compounds different in terms of melting and boiling point and electrical conductivity and hardness and brittleness?
Ionic compounds generally have higher melting and boiling points.
How are the melting points and boiling point of molecular compounds different from ionic compounds?
they have diferent temp. also the ionic compounds dont melt they steam
Compared with the melting points of ionic compounds the melting points of molecular solids tend to be .?
Ionic compounds have a higher melting point.
Which have higher boiling points organic or inorganic compounds?
Due to the different density of objects there will be a variety of melting points
