Chapt 4 Notes
Chapt 4 Notes CHE 120-004
Popular in General Chemistry I - NS
Popular in Chemistry
Dr. Wyman Heathcote
verified elite notetaker
This 2 page Class Notes was uploaded by Rochelle Foxx on Tuesday September 29, 2015. The Class Notes belongs to CHE 120-004 at Northern Kentucky University taught by Richard Bloss in Fall 2015. Since its upload, it has received 40 views. For similar materials see General Chemistry I - NS in Chemistry at Northern Kentucky University.
Reviews for Chapt 4 Notes
Report this Material
What is Karma?
Karma is the currency of StudySoup.
You can buy or earn more Karma at anytime and redeem it for class notes, study guides, flashcards, and more!
Date Created: 09/29/15
Chapter 4 Notes Stoichiometry Stoichiometry Measurement of precision of how much products result from how much reactants 0 Grams to Grams mole A Atomic weight of A mole of A mole of B Atomic weight of B mole of B 0 Moles to Moles mole of A mole of B Example CH4 202 C02 2H20 CH4 80g G HZOl 1802g H20 1 mole H20 2 moles H20 1 mole CH4 1 mole CH4 1605g CH4 80g CH4l 18g H2 Thermite Reaction It is iron oxide reacting with aluminum F6203 ZFC A1203 Limiting Reactant The reactant that has the smallest amount Theoretical yield The maximum amount of product that can be obtained from reactants Actual yield The measured amount of products in the chemical reaction Percent yield The actual yield diVided by the theoretical yield Percent Yield Actual Yield Theoretical Yield 100 Quantitative analysis of a Mixture A substance present in an unknown amount can be allowed to react with a known amount of another substance If the stoichiometric ratio for their reaction is known the unknown amount can be determined A material of unknown composition can be converted to one or more substances of known composition Those substances can be identified their amounts determined and these amounts related to the amount of the original unknown substance Find Limiting reactant 3A 4B C 2D 20 Moles of A and 30 Moles of B Moles of A needed 3 moles of A 4 moles of B 30 moles B 225 moles of A is needed there is only 2 Moles of B needed 4 moles of B 3 moles of A 2 moles of A 267 moles of B used Moles of D 2 moles of D 3 moles of A 2 mole A 13 moles of D Moles of B left 30 267 033 33 Dilute Containing relatively low amount of solute Concentrated relatively high amount of solute per unit of solute Saturated solution containing the maximum amount of solute it can contain Unsaturated solution containing less than the amount of solute it can contain Supersaturatedtemporary condition Where a solution holds more solute than it actually soluble Solubility amount of solute needed to make a saturated solution Molarity moles of solute liter of solute M molesliter Moles M Volume liters
Are you sure you want to buy this material for
You're already Subscribed!
Looks like you've already subscribed to StudySoup, you won't need to purchase another subscription to get this material. To access this material simply click 'View Full Document'