1 / 9

Stoichiometry

Stoichiometry. Mole-Mass Mass-Mass. Mass-Mole Problems. Step 1 : Write a BALANCED EQUATION Step 2 : Determine your known & unknowns Step 3 : Convert known mass to moles (molar mass-known) Step 4 : Convert known mole to unknown mole (Mole-Mole ratio). Mass-Mole Problems. Example:.

zarola
Download Presentation

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 Mole-Mass Mass-Mass

  2. Mass-Mole Problems • Step 1: Write a BALANCED EQUATION • Step 2: Determine your known & unknowns • Step 3: Convert known mass to moles (molar mass-known) • Step 4: Convert known mole to unknown mole (Mole-Mole ratio)

  3. Mass-Mole Problems Example: 2 H2O 2 H2 + O2 How many moles of water can be formed from 48.0 g O2? 48.0 g O2 1 mol O2 2 mol H2O 3.00 mol H2O = 32.00 g O2 1 mol O2

  4. 3 2 3 Mass-Mole Practice CuSO4 + Al Al2(SO4)3 + Cu How many moles of CuSO4 are required to react with 13.5 g of Al? Mole ratio 1 mol Al 3 mol CuSO4 13.5 g Al 0.751 mol CuSO4 = 26.98 g Al 2 mol Al How many moles of Al2(SO4)3 are produced when 13.5g of Al react? 1 mol Al 1 mol Al2(SO4)3 13.5 g Al 0.250 mol Al2(SO4)3 = 26.98 g Al 2 mol Al

  5. 3 2 2 Mass-Mole Practice Ca + AlCl3 3 CaCl2 + Al How many moles of AlCl3 are required to react with 5.7g of Ca? 1 mol Ca 2 mol AlCl3 5.7 g Ca 0.095 mol AlCl3 = 40.08 g Ca 3 mol Ca How many moles of CaCl2 are produced when 5.7g of Ca react? 1 mol Ca 3 mol CaCl2 5.7 g Ca 0.14 mol CaCl2 = 40.08 g Ca 3 mol Ca

  6. Mass-Mass Problems • Step 1: Write a BALANCED EQUATION • Step 2: Determine your known & unknowns • Step 3: Convert known mass to moles (molar mass-known) • Step 4: Convert known mole to unknown mole (Mole-Mole ratio) • Step 5: Convert unknown mole to gram (molar mass- unknown)

  7. Mass-Mass Problems Example: 2 H2O 2 H2 + O2 How many grams of water can be formed from 48.0 g O2? 48.0 g O2 1 mol O2 2 mol H2O 18.02 g H2O 54.1 g H2O = 32.00 g O2 1 mol O2 1 mol H2O

  8. 3 2 3 Mass-Mass Practice CuSO4 + Al Al2(SO4)3 + Cu How many grams of CuSO4 are required to react with 8.5g Al? Mole ratio 1 mol Al 3 mol CuSO4 159.61 g CuSO4 8.5 g Al = 26.98 g Al 2 mol Al 1 mol CuSO4 75 g CuSO4 How many grams of Al2(SO4)3 are produced when 8.5g Al react? 1 mol Al 1 mol Al2(SO4)3 342.14 g Al2(SO4)3 8.5 g Al = 26.98 g Al 2 mol Al 1 mol Al2(SO4)3 54 g Al2(SO4)3

  9. 3 2 2 Mass-Mass Practice Ca + AlCl3 3 CaCl2 + Al What mass of AlCl3 is required to react with 1.9g of Ca? 1 mol Ca 2 mol AlCl3 133.33 g AlCl3 1.9 g Ca = 40.08 g Ca 3 mol Ca 1 mol AlCl3 4.2 g AlCl3 What mass of CaCl2 is produced when 1.9g of Ca react? 1 mol Ca 3 mol CaCl2 110.98 g CaCl2 1.9 g Ca = 40.08 g Ca 3 mol Ca 1 mol CaCl2 5.3 g CaCl2

More Related