CHEM 101 Lecture Notes - Lecture 8: Nonmetal, Calcium Oxide, Iron(Ii) Sulfide
24 Sep 2016
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Ca2+ + h2edta2- --> cah2edta (note 1:1 ratio of reactants) Calculate the number of moles of edta required to titrate the water sample. Smallest whole number repeating ratio of ions present in an ionic compounds that results in charge neutrality o. Chemical formulas for ionic compounds represent the simplest ratio of ions present. Metal is always present as the positive ion, and the nonmetal is always the negative ion o. The full name of the metallic element is given first, followed by a separate word containing the stem of the nonmetallic element name and the suffice -ide. Naming ionic compounds (for metals with variable charges: metals in these compounds form more than one type of positive charge o. Charge on the metal ion must be specified o o. Roman numeral indicated the charge of the metal cation (positive ion) Transition metal cations usually require a roman numeral. Fes: iron(ii) sulfide: metallic elements with a fixed charge.
