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Anonymous users2024-02-06The reason why iodine is soluble in alcohol is that the iodine molecule is ethanol.
The alcohol hydroxyl group (-OH) is polarized, and the other halogens.
Elemental substances can be soluble in alcohol.
Although iodine (I2) is a non-polar molecule.
Whereas, alcohol (C2H5OH) is a polar molecule.
The reason is that ethanol has an alcohol hydroxyl group (-OH), and the oxygen in this hydroxyl group has a strong ability to attract electrons, which will be an electron cloud of iodine atoms.
Attracted so that the atom is positively charged and the other end negatively charged. That is, the iodine molecule is polarized, and the iodine is polar and easily dissolved in polar solvents (H2O and C2H5OH are both polar solvents).
Halogens are soluble in organic solvents (like CCL4, alcohol, etc.).
The chemical properties of halogens are all similar, and they are the outermost electron shell.
There are 7 electrons on the body, and there is a tendency to acquire one electron to form a stable octapophyte structure of halide ions.
Therefore, halogens are oxidizing, and the smaller the atomic radius, the stronger the oxidation, so fluorine is the most oxidizing of the element. With the exception of f, halogens have oxidation states of +1, +3, +5, +7 and form ionic compounds with typical metals.
Other halides are covalent compounds.
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Anonymous users2024-02-05It is also somewhat related to similar compatibility, because iodine (I2) is a non-polar molecule, while alcohol (C2H5OH) is a polar molecule. The reason is that ethanol has an alcohol hydroxyl group (-OH), and the oxygen in this hydroxyl group has a strong ability to attract electrons, attracting an electron cloud of an iodine atom to it, making the atom positively charged and the other end negatively charged. That is, the iodine molecule is polarized, and the iodine is polar at this time, and it is easy to dissolve in polar solvents (H2O and C2H5OH are both polar solvents), I hope it will help you.
Also, fluorine, chlorine, bromine, iodine and other halogen elements are redundant alcohol!! The principle is the same as above.
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Anonymous users2024-02-04a A solution is composed of at least two substances.
1. Stable mixture, iodine crystals can be dissolved in alcohol, so it can form a solution b The liquid that is dissolved in the liquid and the liquid are mixed unevenly.
1. The unstable mixture belongs to the emulsion, and the camellia oil is insoluble in water, so the formation of the emulsion c The mixing of grease and dish soap is an emulsion, so it cannot form a solution d The solution is composed of at least two substances.
1. Stable mixture, salt can be dissolved in water, so it can form a solution In summary, so choose: a
Fill in item D: salt and water, etc.
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