Stoichiometry Ideal Stoichiometric Calculations. Stoichiometry  Mole – Mole Stoichiometry Conversion.

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Presentation transcript:

Stoichiometry Ideal Stoichiometric Calculations

Stoichiometry  Mole – Mole Stoichiometry Conversion

Stoichiometry  Mass – Mass Stoichiometry Conversions

Stoichiometry  Mole – Mole Stoichiometry Conversions  Sample Problem  In a spacecraft, the carbon dioxide exhaled by astronauts can be removed by its reaction with lithium hydroxide, LiOH, according to the following chemical equation  How many moles of lithium hydroxide are required to react with 20 mol CO 2, the average amount exhaled by a person each day? CO 2 (g) + 2LiOH(s) → Li 2 CO 3 (s) + H 2 O(l)

 Mole – Mole Stoichiometry Conversions  Sample Problem Solution  Given: amount of CO 2 = 20 mol  Unknown: amount of LiOH (mol) Stoichiometry

 Mole – Mass Stoichiometry Conversions

Stoichiometry  Stoichiometry Conversions

Stoichiometry  Stoichiometry Conversions  Sample Problem  In photosynthesis, plants use energy from the sun to produce glucose, C 6 H 12 O 6, and oxygen from the reaction of carbon dioxide and water  What mass, in grams, of glucose is produced when 3.00 mol of water react with carbon dioxide? 6CO 2 (g) + 6H 2 O(l) → C 6 H 12 O 6 (s) + 6O 2 (g)

Stoichiometry  Stoichiometry Conversions  Sample Problem Solution  Given: amount of H 2 O = 3.00 mol  Unknown: mass of C 6 H 12 O 6 produced (g) 90.1 g C 6 H 12 O 6

Stoichiometry  Mass – Mole Stoichiometry Conversions

Stoichiometry  Stoichiometry Conversions  Sample Problem  The first step in the industrial manufacture of nitric acid is the catalytic oxidation of ammonia  The reaction is run using 824 g NH 3 and excess oxygen.  How many moles of NO are formed?  How many moles of H 2 O are formed? NH 3 (g) + O 2 (g) → NO(g) + H 2 O(g) (unbalanced)

Stoichiometry  Stoichiometry Conversions  Sample Problem Solution  Given: mass of NH 3 = 824 g  Unknown: amount of NO produced (mol) amount of H 2 O produced (mol) 4NH 3 (g) + 5O 2 (g) → 4NO(g) + 6H 2 O(g)

 Stoichiometry Conversions  Sample Problem Solution Stoichiometry

 Mass – Mass Stoichiometry Conversions

Stoichiometry  Mass – Mass Stoichiometry Conversions

Stoichiometry  Stoichiometry Conversions  Sample Problem  Tin(II) fluoride, SnF 2, is used in some toothpastes. It is made by the reaction of tin with hydrogen fluoride according to the following equation  How many grams of SnF 2 are produced from the reaction of g HF with Sn? Sn(s) + 2HF(g) → SnF 2 (s) + H 2 (g)

Stoichiometry  Stoichiometry Conversions  Sample Problem Solution  Given: amount of HF = g  Unknown: mass of SnF 2 produced (g) = g SnF 2

Stoichiometry  Various Types of Stoichiometry

Stoichiometry  Volume – Volume Stoichiometry Conversions

Stoichiometry  Particle – Particle Stoichiometry Conversions