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Sodium Chloride (Salt) has a lattice structure and since it is a solid, there is limited movement of the atoms within the structure. The structure of water is very different, the molecules of water are linked through hydrogen bonds and inter-molecular bonds within the individual water molecules . The molecules in water can also move more freely relative to those in salt.

This means that more energy is required to break the bonds within the lattice structure of salt since there are a greater number of bonds connecting the atoms. The bonds between water molecules are broken with less energy, hence water boils at a lower temperature than salt decomposes (it does not 'melt').

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11y ago
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11y ago

It's due to the nature of the compunds. Water is a covalent molecule, which generally have low melting points due to weak intermolecular forces, whereas salt is an ionic lattice, which usually have high melting points because energy is needed to overcome the electromagnetic force binding the ions together.

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13y ago

Salt doesn't melt in ice. Salt lowers the freezing point of water. Which causes the ice to melt.

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11y ago

because sodium chloride is ionic and have very strong ionic bond (electrostatic force of attraction)

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Q: Why does sodium chloride have a melting point of 800?
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The melting point of the salt sodium chloride is?

The melting point of sodium chloride is 801 0C.


Sodium chloride melting point reduced by adding calcium chloride?

Yes, a mixture containing 42% NaCl and 58% CaCl2 melts at about 590 Celsius while pure sodium chloride melts at about 800 Celsius.


Is a solid with a melting point of 800 degrees Celsius ionic or molecular?

The melting point of a compound cannot determine the bonding structure. As an example, both diamond and sodium chloride have higher melting points than 800 centigrade but are covalent and ionic compounds respectively.


Can salt melt in heat?

No. The salt does not melt in water, but it dissolves in water. The melting point of common salt (sodium chloride along with other metal salts as impurities) requires very high temperatures (exceeding 800 Degrees C) to melt. The process of melting and dissolving in a solvent are two distinct and totally different ball games, if you will.


What temperature does sodium hydride decompose at?

Melting and decomposition at about 800 0C.


What liquid metal has a 800 celsius melting point?

Cerium (58) has a melting point of 799 deg C.


What does 800 milliliters of salt mean?

1. A volume of powdered sodium chloride.2. A volume of water solution of sodium chloride with a non-specified concentration in this case..


What is the melting point of a Pyrex test tube?

A glass hasn't a true melting point. The softening point of Pyrex glass is between 800 °C and 850 °C.


What happens when sodium chloride and water is heated?

The water will boil if its temperature is brought high enough. The significant difference between boiling water and boiling water with sodium chloride in it is that the NaCl water will boil sooner. Adding salt to water will lower its boiling point as well as its freezing point. This is also why the road is salted in sub zero weather: to hinder the road from becoming icy.


Why Camphor can easily be purified by the process of sumlimation and common salt cannot be purified by sublimation?

Camphor is a molecular compound, with a molecular formula C10H16O. Because it is molecular and the solid is "held together" by inter-molecular forces it has a lower melting point 175 C and boling point 204C than sodium chloride mp 800+C. bp 1400+ C. Under gentle heating solid camphor has a a reasonable vapor pressure and sublimes (no melting or boiling required -as it is flammable care is needed.) Sodium chloride a giant ionic lattice held together by strong electrostatic bonds when under heated gently has virtually no vapor pressure and does not sublime.


What is the melting point buckminsterfullerene?

the melting point is about 1000 degrees XDXD


What is the melting point of die cast?

aluminum about 1200 deg F zinc about 800 deg F