2007-08-05 15:56:31 · 7 answers · asked by sweetgirl78228 2 in Science & Mathematics ➔ Chemistry
It's because NaCl is a polar compound and so is water. I2 is non-polar. When it comes to polarity and solubility, the saying is "like dissolves like."
2007-08-05 15:58:56 · answer #1 · answered by DavidK93 7 · 2⤊ 6⤋
Nacl Is Soluble In Water But I2 Is Not Explain
2016-11-09 20:38:18 · answer #2 · answered by wansley 4 · 0⤊ 0⤋
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NaCl is made up of charged ions, which can interact with the dipoles present in the water molecules. The large polarity of water means that it is extremely good at shielding charge (called a dielectric constant) so that the ions can be separated from each other, resulting in the NaCl dissolving. I2 is held together by a covalent bond, neither atom is charged and they are not really attracted to water. Also the shielding effect of water does little good, because it's not the charge that is causing the I2 molecules to attract to each other, it's the dispersion forces.
2016-04-01 01:40:38 · answer #3 · answered by Anonymous · 0⤊ 0⤋
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RE:
why is NaCl soluble in water but I2 is not?
2015-08-19 04:04:42 · answer #4 · answered by Marilee 1 · 0⤊ 0⤋
NaCl is made of ionic bonds which is the attraction between negative and positive ions. Ions can interact with hydrogen bonds of water. Water molecules pulls the sodium and chloride ions off the corners, which causes the salt to dissolve. Iodine does dissolve in water but not to the extent as salt because I2 has nonpolar covalent bonds which do not interact with water as much. You need to read about bonding in a general chemistry book available at your library.
2007-08-05 16:10:17 · answer #5 · answered by John A 3 · 1⤊ 0⤋
It has to do with the electronegativity difference. Each element has a different electronegativity. if the difference between two or more bonded atoms is 0.0-0.3 it is a polar covalent, if it is 0.3-1.7 then it is non-polar covalent. if it is 1.7-3.3 it is ionic. NaCl is a polar molecule as is H2O or water. when NaCl mixes with H2O the bonds holding the sodium and the chlorine break causeing the NaCl to become soluble. I2 is nonpolar because its Electronegativity difference is 0.0 a polar solution cannot absorb a nonpolar or like disolves like
2007-08-05 16:10:40 · answer #6 · answered by snowboardercox@titusmtnny 1 · 2⤊ 0⤋
The atoms of Sodium chloride are held together by ionic bonds (electro-static forces). When Sodium reacts with Chlorine, an electron is transferred from the Sodium to the Chlorine.
When Sodium chloride comes in contact with water, the water "pulls" the crystals apart into Na+ and Cl- ions. These ions are surrounded by water molecules and so stay in solution.
Iodine stays together as I2 in water. It has no ions to easily interact with the water. The Iodine atoms are covalently bonded to each other (they share electrons).
2007-08-05 16:04:22 · answer #7 · answered by Richard 7 · 7⤊ 1⤋
sodium chloride is a salt. Water can surround the ions and stabilize them in solution because it is highly polar. Iodine is nonpolar. It dissolves in other nonpolar liquids like carbon tetrachloride and carbon disulfide.
2007-08-05 15:59:37 · answer #8 · answered by Fly On The Wall 7 · 0⤊ 0⤋