Which of the following explains why water is a good solvent for polar and ionic compounds?Choose 1 answer:Choose 1 answer:(Choice A) Water is a polar molecule.AWater is a polar molecule.(Choice B) Water is a non-covalent molecule.BWater is a non-covalent molecule.(Choice C) Water is an ionic compound.CWater is an ionic compound.(Choice D) Water is a hydrophobic molecule.DWater is a hydrophobic molecule.Stuck?
Question
Which of the following explains why water is a good solvent for polar and ionic compounds?Choose 1 answer:Choose 1 answer:(Choice A) Water is a polar molecule.AWater is a polar molecule.(Choice B) Water is a non-covalent molecule.BWater is a non-covalent molecule.(Choice C) Water is an ionic compound.CWater is an ionic compound.(Choice D) Water is a hydrophobic molecule.DWater is a hydrophobic molecule.Stuck?
Solution
The correct answer is (Choice A) Water is a polar molecule.
Here's why:
Water is a polar molecule because it has a slight positive charge on one side and a slight negative charge on the other. This is due to the uneven distribution of electrons between the oxygen and hydrogen atoms that make up the water molecule.
Polar and ionic compounds also have charges. Polar compounds have a slight charge due to the uneven distribution of electrons, while ionic compounds have a full positive or negative charge because they are made up of ions.
When a polar or ionic compound is placed in water, the positive side of the water molecule is attracted to the negative ions or parts of the polar compound, and the negative side of the water molecule is attracted to the positive ions or parts of the polar compound. This attraction helps to pull the compound apart and dissolve it in the water.
Therefore, water's polarity makes it a good solvent for polar and ionic compounds.
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