Adipic acid, C6H10O4, is a raw material for the making of nylon and it can be prepared in the laboratory by the following (unbalanced) reaction between cyclohexene, C6H10, and sodium dichromate, Na2Cr2O7 in sulfuric acid:      C6H10(l) + Na2Cr2O7(aq) + H2SO4(aq) ® C6H10O4(aq) + Cr2(SO4)3(aq) + Na2SO4(aq) + H2O The only available supply of sodium dichromate is its dihydrate, Na2Cr2O72H2O. Since the reaction occurs in an aqueous medium, the water in the dihydrate causes no problems, but it does contribute to the mass of what is taken of this reactant. How many grams of this dihydrate are also required in the preparation of 12.5 grams of purified adipic acid, which is a yield of 68.60%?

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Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".