O part 2 provide a table showing the results from the

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o Part 2 - Provide a table showing the results from the three runs and the calculated average volume of CO 2 produced. Calculation: o Part 1- 30.0 mL of vinegar contains approximately 2.17 x 10 -2 moles of acetic acid, HC 2 H 3 O 2 . How many grams of baking soda (NaHCO 3 ) are needed to react with all of this amount of acetic acid? Show all work. (Hint: how many moles of NaHCO 3 are needed?) o Part 2- Show the calculations for determining the moles of CO 2 produced. o Part 2- Show all calculations determining the moles of unknown acid and the molar mass of the unknown acid. Choose the most likely candidate for your unknown acid. Discussion (at least 200 words) o Part 1 – Answer the following questions and discuss. Is your calculation of number of grams of baking soda needed to react with all of the acetic acid consistent with your experimental observations? What evidence did you consider to make this decision? Is there a relationship between the amount of baking soda used and the volume of the balloon? Is there a point at which more baking soda does not increase the size of the balloon? Is there a limit to the quantity of gas that can be produced from 30 mL of vinegar? Using what you know about chemical reactions, can you explain why adding more of one reactant would not increase the quantity of product produced? Which of the two reactants is left in each of the five bottles after the reaction stops? (Hint: if you are not sure, open the container. Add a drop of vinegar. Does a reaction occur? If not, add a pinch of baking soda. Now what happens?) Which reactant in each bottle limited the volume of gas formed, i.e., which is the limiting reactant? How do you know? Defend your explanation with appropriate evidence and reasoning. o Part 2 – Discuss the reaction in detail (no procedure , simply describe what happens during the reaction.) Also, discuss how you were able to determine the identity of the unknown acid. 3

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