1 / 8

Stoichiometry

Stoichiometry. Coach Cox. What is Stoichiometry?. Stoichiometry is the study of the quantitative relationships between the amounts of reactants used and the products formed by a chemical reaction Stoichiometry is based on the Law of Conservation of Mass

ellis
Télécharger la présentation

Stoichiometry

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Stoichiometry Coach Cox

  2. What is Stoichiometry? • Stoichiometry is the study of the quantitative relationships between the amounts of reactants used and the products formed by a chemical reaction • Stoichiometry is based on the Law of Conservation of Mass • Mass of Reactants = Mass of Products

  3. What is stoichiometry used for? • Stoichiometry is used to tell chemists: • How much product will be produced • How much reactant is needed to make a product

  4. Stoichiometry and the Balanced Equation • Coefficients in a balanced chemical equation can tell us: • The # of individual particles: (atoms, molecules, or FUN) • The # of moles of particles • The mass of reactants and products (Found using the molar mass(MM) of the compounds)

  5. Example • Balance the Following Equation: ___ Fe(s) + ___ O2(g)___ Fe2O3(s)

  6. Example Answer • Balance the Following Equation: 4 Fe(s) + 3 O2(g) 2 Fe2O3(s)

  7. Fill in the Table Fill in the table below: ReactantsProducts Name: Iron + Oxygen  Iron (III) Oxide Formula: Fe + O2 Fe2O3 ___4__atoms of Fe + __3___ molecules O2 ___2__ formula units Fe2O __4___ moles Fe + ___3__ moles O2 __2___ moles Fe2O3 (55.845x4) _223.38_ grams Fe + (32x3) _96_ grams O2 (159.69x2)_319.38_ grams Fe2O3 _319.38___ grams reactants  _319.38__ grams products

  8. Mole Ratio (Coefficient Ratio) • Mole Ratio (coefficient ratio) – the ratio between the numbers of moles of any 2 substances in a balanced chemical equation • Ex. Balance the following equation and determineall mole ratios: • ____ N2(g) + ____ H2(g)  ____ NH3(g) • ____ Fe(s) + ____ H2O(l)  ____ Fe3O4(s) + ____ H2(g)

More Related