* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Chemical Reactions - Effingham County Schools
Electrochemistry wikipedia , lookup
Hydrogen-bond catalysis wikipedia , lookup
Atomic theory wikipedia , lookup
Photoredox catalysis wikipedia , lookup
Electrolysis of water wikipedia , lookup
Physical organic chemistry wikipedia , lookup
Isotopic labeling wikipedia , lookup
Multi-state modeling of biomolecules wikipedia , lookup
Registration, Evaluation, Authorisation and Restriction of Chemicals wikipedia , lookup
Process chemistry wikipedia , lookup
Chemical thermodynamics wikipedia , lookup
George S. Hammond wikipedia , lookup
Rate equation wikipedia , lookup
Transition state theory wikipedia , lookup
Chemical reaction wikipedia , lookup
Photosynthetic reaction centre wikipedia , lookup
Lewis acid catalysis wikipedia , lookup
Strychnine total synthesis wikipedia , lookup
Gas chromatography–mass spectrometry wikipedia , lookup
Click chemistry wikipedia , lookup
Stoichiometry Introduction to Stoichiometry Stoichiometry Objectives Define stoichiometry Describe the importance of the mole ratio in stoichiometric calculations Write a mole ratio relating two substances in a chemical equation Stoichiometry Stoichiometry Definitions Composition stoichiometry deals with the mass relationships of elements in compounds Reaction stoichiometry involves the mass relationships between reactants and products in a chemical reaction Stoichiometry Reaction Stoichiometry Problems Problem Type 1: Given and unknown quantities are amounts in moles Amount of given substance (mol) Amount of unknown substance (mol) Stoichiometry Reaction Stoichiometry Problems Problem Type 2: Given is an amount in moles and unknown is a mass Amount of given substance (mol) Amount of unknown substance (mol) Mass of unknown substance (g) Stoichiometry Reaction Stoichiometry Problems Problem Type 3: Given is a mass and unknown is an amount in moles Mass of given substance (g) Amount of given substance (mol) Amount of unknown substance (mol) Stoichiometry Reaction Stoichiometry Problems Problem Type 4: Given is a mass and unknown is a mass Mass of a given substance (g) Amount of given substance (mol) Amount of unknown substance (mol) Mass of unknown substance (g) Stoichiometry Mole Ratio A mole ratio is a conversion factor that relates the amounts in moles of any two substances involved in a chemical reaction 2Al2O3(l) → 4Al(s) + 3O2(g) 2 mol Al2O3 4 mol Al , 2 mol Al2O3 3 mol O2 , 4 mol Al 3 mol O2 Stoichiometry Converting Between Amounts in Moles Stoichiometry Stoichiometry Calculations Stoichiometry Stoichiometry Calculations Sample Problem For each equation, balance and write all possible mole ratios HgO (s) NH3 (g) + NO (g) Hg (l) + O2 (g) N2 (l) + H2O (l) Stoichiometry Stoichiometry Calculations Sample Problem How many moles of sodium will react with water to produce 4.0 mol of hydrogen in the following reaction? Na(s) + H2O(l) NaOH(aq) + H2(g) Stoichiometry Stoichiometry Calculations Sample Problem How many moles of lithium chloride will be formed by the reaction of chlorine with 0.046 mol of lithium bromide in the following reaction? LiBr(aq) + Cl2(g) LiCl(aq) + Br2(l) Stoichiometry Stoichiometry Calculations Sample Problem Aluminum will react with sulfuric acid in the following reaction. Al(s) + H2SO4(l) Al2(SO4)3(aq) + H2(g) How many moles of H2SO4 will react with 18 mol Al? How many moles of each product will be produced from 18 mol Al? Stoichiometry Stoichiometry Calculations Sample Problem Propane burns in excess oxygen according to the following reaction. C3H8 + O2 CO2 + H2O How many moles each of CO2 and H2O are formed from 3.85 mol of propane? If 0.647 mol of oxygen is used in the burning of propane, how many moles each of CO2 and H2O are produced? How many moles of C3H8 are consumed?