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4.3Reaction Stoichiometry

Reaction StoichiometryBy the end of this section, you will be able to: Explain the concept of Stoichiometry as it pertains to chemical reactions Use balanced chemical equations to derive stoichiometric factors relating amounts of reactants andproducts Perform stoichiometric calculations involving mass, moles, and solution molarityA balanced chemical equation provides a great deal of information in a very succinct format. Chemical formulasprovide the identities of the reactants and products involved in the chemical change, allowing classification of thereaction. Coefficients provide the relative numbers of these chemical species, allowing a quantitative assessmentof the relationships between the amounts of substances consumed and produced by the reaction.

(a) Outline the steps necessary to determine the number of moles and mass of H2. (b) Perform the calculations outlined. 47. Gallium chloride is formed by the reaction of 2.6 L of a 1.44 M solution of HCl according to the following equation:2Ga+6HCl 2GaCl3+3H2.

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