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anhydrous salt definition

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Question:What is the difference between a hydrated salt and an anhydrous salt?

Answers:The difference is water. A hydrated salt is one that has one or more (usually more) water molecules per salt "molecule" that are actually part of the crystalline structure of the salt. Often when the hydrated salt is heated, and the water removed, (dehydrated) the crystal disintegrates to a powder of the anhydrous (literally, "without water") salt. That occurs when copper (II) sulfate pentahydrate is dehydrated by heating it. It goes from a pretty, dark blue crystal to a light blue to white powder. CuSO4*5H2O --> CuSO4 + 5H2O



Question:Is heating a hydrated salt to make it anhydrous considered a chemical REACTION? Ex CuSO4 * 5H20 --(heat)--> CuSo4 + h20 and why Explain why



Answers:It is the stonger Lewis base of the group. It accepts the lone pairs on oxygen the quickest and easiest and has the highest (or the least shielded proton) relative exposed positive charge

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Study Of Acid Bases And Salts :Check us out at www.tutorvista.com An acid (from the Latin acidus meaning sour) is any chemical compound that, when dissolved in water, gives a solution with a hydrogen ion activity greater than in pure water, ie a pH less than 7.0 in its standard state. That approximates the modern definition of Johannes Nicolaus Br nsted and Martin Lowry, who independently defined an acid as a compound which donates a hydrogen ion (H+) to another compound (called a base). Common examples include acetic acid (in vinegar) and sulfuric acid (used in car batteries). Acid/base systems are different from redox reactions in that there is no change in oxidation state. Acids can occur in solid, liquid or gaseous form, depending on the temperature. They can exist as pure substances or in solution. Chemicals or substances having the property of an acid are said to be acidic. In chemistry, a base is most commonly thought of as an aqueous substance that can accept hydrogen ions. Bases are also the oxides or hydroxides of metals. A soluble base is also often referred to as an alkali if hydroxide ions (OH ) are involved. This refers to the Br nsted-Lowry theory of acids and bases. Alternative definitions of bases include electron pair donors (Lewis), and as sources of hydroxide anions (Arrhenius). In addition to this, bases can commonly be thought of as any chemical compound that, when dissolved in water, gives a solution with a hydrogen ion activity lower than that of pure water, ie a pH higher than ...