Green Limiting Reagent Background g Pb ( C H O ) • H O × mol Pb ( C H O ) • H O mol Pb ( C H O ) • H O × g Pb ( C H O ) • H O mol Pb ( C H O ) mol Pb ( C H O ) • H O → Chemistry 120 Grossmont College mol Pb ( C H O ) • H O mol Pb ( C H O ) mol KIO mol Pb ( C H O ) mol KIO mol Pb ( C H O ) → ) × ) ) ) × Chemistry 120 Grossmont College Procedure We will use the method of mass by difference to minimize any systematic errors in the weighing process

Green Limiting Reagent Background g Pb ( C H O ) • H O × mol Pb ( C H O ) • H O mol Pb ( C H O ) • H O × g Pb ( C H O ) • H O mol Pb ( C H O ) mol Pb ( C H O ) • H O → Chemistry 120 Grossmont College mol Pb ( C H O ) • H O mol Pb ( C H O ) mol KIO mol Pb ( C H O ) mol KIO mol Pb ( C H O ) → ) × ) ) ) × Chemistry 120 Grossmont College Procedure We will use the method of mass by difference to minimize any systematic errors in the weighing process. Be sure to use the same balance throughout the experiment! Chemistry 120 Grossmont College Calculations Chemistry 120 Grossmont College Prelaboratory Exercise: Limiting Reagent CuCl AgNO Chemistry 120 Grossmont College CuCl AgNO Chemistry 120 Grossmont College Data Sheet: Limiting Reagent Sample Calculations Assigned Letter Spreadsheet ID Actual weight of used mass + beaker = mass beaker = mass = Describe the Actual moles used used Actual weight of mass + beaker = mass beaker= mass = Describe the Actual moles Actual moles used used Weight of filter paper Weight of watch glass Describe the wet Weight of filter paper, watch glass and precipitate 1st drying Weight of filter paper, watch glass and precipitate 2nd drying Chemistry 120 Grossmont College → CaCl Na CO CaCl Na CO Theoretical weight of Actual weight of collected Describe the dried Percent Yield Chemistry 120 Grossmont College Post Lab Questions Chemistry 120 Grossmont College → Chemistry 120 Grossmont College