1 / 7

Stoichiometry

Stoichiometry. Warm-Up Question(s). Warm-up. How many seconds are there in 72 hours? Show your work. Overview. Stoichiometry is used to make sense of a chemical equation…. Quantitatively . Why use the mole? It is impossible to weigh out an individual molecule or molecules.

warren-wynn
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 Warm-Up Question(s)

  2. Warm-up • How many seconds are there in 72 hours? • Show your work.

  3. Overview • Stoichiometry is used to make sense of a chemical equation….Quantitatively. • Why use the mole? • It is impossible to weigh out an individual molecule or molecules. • We use the molar mass to help with this.

  4. p. 334 Solved Problem • You must use a mole (molar) ratio of the reactants to solve for moles of a product. • Ex: 2 Al (s) + 3Cl2 -> 2AlCl3 (s) • 3 moles of Cl2 = 2 moles of AlCl3

  5. Solved Problem p. 337 • You must use a molar mass of a compound to solve for moles of that compound. • Ex: 1 mole of CaCO3 = 40.08g + 12.01g + (16.0g x 3) = 100.09 g • Molar mass of CaCO3 = 100.09 g/mole • Use the molar mass as a conversion factor.

  6. Solved Prob p. 338 • Work on Own • Ques. 362 - 363 #39, 41, 43

  7. Example Problem • A sample of potassium chlorate is heated and decomposes according to the following equation: 2 KClO3 → 2 KCl + 3 O2 • If 11.2 grams of potassium chlorate decompose completely, how many grams of potassium chloride will be produced from this reaction?

More Related