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Why do polar substances dissolve well in other polar substances?
Wiki User
∙ 12y ago
Polar solvents are characterized by regions with strong positive or negative electrical charges. For example water, the most usual polar solvent, is negatively charged on the oxygen end of the molecule and positively charged on the hydrogen end, simply because the oxygen nucleus attracts the shared electrons more strongly than the hydrogen nuclei do (and the hydrogen atoms are arranged at the points of a tetrahedron, rather than in a straight line with the oxygen atoms). And a typical polar solute such as sodium chloride, has positively charged sodium ions and negatively charged chlorine ions because chlorine has a much stonger attraction for electrons than sodium does, so it takes an electron from sodium. And then, given Coulomb's Law, we get an attraction between oppositely charged chemicals or portions of chemicals; the positively charged sodium ions would be attracted to the negatively charged oxygen region of the water molecule, the negatively charged chlorine ions are attracted to the positively charged hydrogen region of the water molecule. It is these electrostatic attractions which cause the solute to dissolve in the solvent.
Wiki User
∙ 14y ago
Wiki User
∙ 12y agobecause, they both need the electrons and it is very easy for them to share them.
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Is glucose hydrophobic?
GLUCOSE IS VERY DEFINITELY POLAR WITH OH (HYDROXYL) GROUPS ALL OVER IT, WHICH ARE THEMSELVES VERY POLAR. THE MOLECULE IS ALSO VERY UNSYMMETRICAL WHICH TENDS TO MAKE IT POLAR. THE FACT THAT GLUCOSE IS EXTREMELY SOLUBLE IN WATER (ANOTHER POLAR SUBSTANCE) SHOWS THAT GLUCOSE IS POLAR SINCE "POLAR DISSOLVES IN POLAR" AND "NONPOLAR DISSOLVES IN NONPOLAR" (LIKE WAX AND GASOLINE)
What molecules have an uneven charge with more negative charge on the side and more positive charge on the other?
You are describing polar molecules, of which water is probably the most well known.
What substance crosses the cell membrane by simple diffusion?
Some substances, such as fructose molecules, need a little assistance to enter and exit cells.Proteins imbedded in the cell membrane lightly bind to these substances and then change shape to allow the substance to move across the cell membrane.This process is called facilitated diffusion.In facilitated diffusion, substances are moved from an area of high concentration to an area of lower concentration.
What filters toxic substances out of the blood?
The kidney filters all toxic substances out of the blood and the toxic substances, as well as some excess water, is turned into waste. (and i think you know what "waste" is)
What type of vegetation is found in a polar ice cap?
There is red-leafed plants, plankton, lichen, and and a mix of algae and fungus
Will salt and sugar dissolve in petrol?
Unlike salt and sugar, petrol is a nonpolar substance, meaning that the electrons in its molecules are evenly distributed, rather than concentrated in some areas to make the molecule negatively charged on one side and positively charged on the other, as is the case with polar substances. Polar substances, as well as ionic substances such as salt, tend to dissolve more effectively in other polar substances, such as water, while nonpolar substances tend to dissolve well in nonpolar substances, such as oil. So while salt and sugar dissolve well in water, and oil might dissolve well in petrol, salt and sugar will not dissolve to any great degree in petrol.
Why kerosene is soluble in iodine?
Kerosene is non polar. Iodine is also non polar substance. Like substances dissolve like substances. Therefore, kerosene should dissolve well in kerosene
Can CCl4 dissolve an oil stain?
Yes it can. CCL4 is a non polar molecule meaning that it is miscible with other non polar substances such as oils. Because of this it will not mix well with water, just like oil.
What is the substance that would not dissolve well in water and why?
A nonpolar substance, such as vegetable oil, would not dissolve well in water because water is a polar molecule and dissolves other polar molecules and many ionic compounds, but not nonpolar substances.
What is the nature of the substances dissolved in water?
Substances that dissolve in water are polar molecules, like water. Also, many ionic compounds can also dissolve in water as well, such as common table salt, NaCl.
Why wont oil dissolve well in the gulf of Mexico?
Oil are nonpolar substances, and water is a polar substance. Because of this, water molecules are more attracted to each other than the oil, and will not break their bonds to dissolve the oil.
Why does methane not dissolve well in water?
Methane is a non polar molecule and water is a very polar molecule. Therefore, one will not readily dissolve in the other.
Why do so many substances dissolve in water?
The difference in the electronegativity of oxygen and water pulls the bonded electrons closer to the oxygen atom than the two hydrogen atoms. This creates a dipole moment (a charge separation along the bond), leaving the oxygen with a partial negative charge, and the hydrogen with a partial positive charge. This is known as a "polar" molecule", and will dissolve other polar substances. With the exception of homo-nuclear diatomics (N2, O2, etc.) all molecules contain at least some degree of polarity, and therefore are able to dissolve in a polar substance. Because water is very polar, it tends to dissolve other highly polar substances ("like dissolves like") extremely well, and will even dissolve molecules that are considered "non-polar" (but they still have a small dipole moment), albeit to a lesser extent.
What does so2 dissolve in?
It dissolve in polar solvents.It dissolve well in water.
Why water dissloves so many different substances?
Water dissolves many substances but its molecules have both a positive and negative side. Each part of the molecule can bond with the molecules of many other substances and create a new solution. This is the reason water is considered the universal solvent.
Why do polar substance dissolve well in other polar substance?
because, they both need the electrons and it is very easy for them to share them.
Why are lipids soluble in organic solvents like chloroform?
Fats, as well as organic compounds, are nonpolar substances. Water, however, is a polar substance. Nonpolar substances dissolve nonpolar substances and polar substances dissolve polar substances (like dissolves like) because each are more attracted to molecules of similar structure than of different structure.
