Honors Stoichiometry Activity Worksheet Instructions: In this laboratory activity, you will taste test two samples of Just Lemons lemonade for taste quality. Then you will analyze lemonade production data for percent yield and excess ingredients. Complete each section of this worksheet, and submit it to your instructor for grading. Activity One: Tasting Excess and Limiting Ingredients Make lemonade samples using the sample 1 and sample 2 recipes. These represent two different batches of Just Lemons lemonade. Record your taste observations for each sample in the data chart. Sample 1: 1 cup water 2/3 cup sugar 1/2 cup lemon juice Sample 2: 1 cup water 1/2 cup sugar 1/4 cup lemon juice Taste Observations Sample 1: It is sweet but also lemony. I can taste the sugar easily and identify the lemon taste. Sample 2: The lemonade is very watery. You can identify the sugar but the lemon is vague. Activity Two: Just Lemons, Inc. Production Here's a one-batch sample of Just Lemons lemonade production. Determine the percent yield and amount of leftover ingredients for lemonade production and place your answers in the data chart. Hint: Complete stoichiometry calculations for each ingredient to determine the theoretical yield. Complete a limiting reactant-to-excess reactant calculation for both excess ingredients. Water - 946.36 g Sugar - 196.86 g Lemon Juice - 193.37 g Lemonade - 719.84 Percent Yield -? Leftover Ingredients - ? Just Lemons Lemonade Recipe Equation: 2 water + sugar + lemon juice = 4 lemonade Mole conversion factors: 1 mole of water = 1 cup = 236.59 g 1 mole of sugar = 1 cup = 198 g 1 mole of lemon juice = 1 cup = 229.96 g 1 mole of lemonade = 1 cup = 225.285 g Show your calculations below. Analysis Questions 1. Based on taste observations only, which ingredients were in excess in the lemonade samples in Activity One? 2. Based on the data in Activity Two, which excess ingredients are affecting the taste of the lemonade in the sample batch? 3. What can Just Lemons, Inc. do during production to reduce the amount of excess ingredients and improve the taste of their lemonade? 4. Try to reduce the amount of leftover ingredients by changing the amount of one, two, or all three starting ingredients. Show your stoichiometric calculations below. 5. During factory inspection, Just Lemons, Inc. discovered that a water valve to the lemonade the mixing station was not functioning. Once they repair it, more water will enter the mixing station. From what you know about the limiting and excess ingredients for current lemonade production, What advice would you give engineers about the upcoming increase in water?