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a) When 20.0 grams of Li() reacts with 30.0 grams of O2(g), which reagent is limiting and which is excess? b) What is the theoretical yield of lithium oxide? c) How many grams of excess reagent remain unreacted?

a) When 20.0 grams of Li() reacts with 30.0 grams of O2(g), which reagent is limiting and which is excess? b) What is the theoretical yield of lithium oxide? c) How many grams of excess reagent remain unreacted?

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Lithium reacts with oxygen to form lithium oxide: 4 Li(s) + O2(g). -> 2 Li2O(s).

**Chemical Reaction Analysis: Lithium and Oxygen** a) **Determining the Limiting and Excess Reagent** When 20.0 grams of \( \text{Li}_{(s)} \) reacts with 30.0 grams of \( \text{O}_2_{(g)} \), which reagent is limiting and which is excess? b) **Calculating Theoretical Yield** What is the theoretical yield of lithium oxide? c) **Calculating Excess Reagent** How many grams of excess reagent remain unreacted? --- **Instructions for Students:** 1. **Understanding Limiting and Excess Reagents:** - Use stoichiometry to find which reactant limits the amount of product formed and which is left over. 2. **Calculating Theoretical Yield:** - Determine the maximum possible amount of lithium oxide that can be produced from the given quantities. 3. **Determining Excess Reagent:** - After calculating the limiting reagent, find out how much of the excess reagent remains unreacted. **Note: No diagrams or graphs are associated with these questions.**
Transcribed Image Text:**Chemical Reaction Analysis: Lithium and Oxygen** a) **Determining the Limiting and Excess Reagent** When 20.0 grams of \( \text{Li}_{(s)} \) reacts with 30.0 grams of \( \text{O}_2_{(g)} \), which reagent is limiting and which is excess? b) **Calculating Theoretical Yield** What is the theoretical yield of lithium oxide? c) **Calculating Excess Reagent** How many grams of excess reagent remain unreacted? --- **Instructions for Students:** 1. **Understanding Limiting and Excess Reagents:** - Use stoichiometry to find which reactant limits the amount of product formed and which is left over. 2. **Calculating Theoretical Yield:** - Determine the maximum possible amount of lithium oxide that can be produced from the given quantities. 3. **Determining Excess Reagent:** - After calculating the limiting reagent, find out how much of the excess reagent remains unreacted. **Note: No diagrams or graphs are associated with these questions.**
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