1 / 7

Percent Yeild

Percent Yeild. Percent Yields. Theoretical yield: max amount of a product that is formed in a reaction (based on calculations). Actual yield: amount of product that is actually obtained in a reaction Usually less than theoretical. Why?. Why?.

sadie
Download Presentation

Percent Yeild

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. Percent Yeild

  2. Percent Yields • Theoretical yield: max amount of a product that is formed in a reaction (based on calculations). • Actual yield: amount of product that is actually obtained in a reaction • Usually less than theoretical. Why?

  3. Why? • Theoretical has assumed that all of limiting reagent has completely reacted. • Many reactions do not go to completion • Unexpected competing side reactions limit the formation of products. • Some reactants are lost during the separation process • Impure reactants • Faulty measuring • Poor experimental design or technique

  4. How to calculate? Percent Yield = Actual Yield x 100% Theoretical yield

  5. Practice: HBrO3 + 5HBr  3H2O + 3 Br2 20g of HBrO3 is reacted with excess HBr. • What is the theoretical yield of Br2? • What is the percent yield, if 47.3g is produced?

  6. Practice alone: When 35g of Ba(NO3)2 is reacted with excess Na2SO4, 29.8g of BaSO4 is recovered. Ba(NO3)2 +Na2SO4 BaSO4 + 2NaNO3 • Calculate the theoretical yield of BaSO4 • Calculate the percent yield of BaSO4

  7. Practice • Pg.368 #7, 8, 9

More Related