CHEM120 Lecture Notes - Stoichiometry, Reagent, Molar Concentration
16 Oct 2011
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Formation of a solid (precipitate) within a clear solution. The coefficients required to balance a chemical equations are called stoichiometric coefficients. If an element occurs in only one compound on each side of the equation, try balancing this element first. When one of the reactants or products exists as the free element, balance this element last. In some reactions, certain groups of atoms remain unchanged. In such cases, balance these groups as a unit. It is permissible to use fractional as well as integral numbers as coefficients. At times, an equation can be balanced most easily by using one or more fractional coefficients and then, if desired, clearing the fractions by multiplying all coefficients by a common multiplier. The combustion of hydrocarbons and of carbon-hydrogen-oxygen compounds produces carbon dioxide and water as the only products. The greek capital letter delta, , means that a high temperature is required.
