Question

2. Carly the chemistry student performs an experiment with vinegar (active ingredient acetic acid, CH,COOH) and baking soda (NaHCO3). Her professor asks her to place varying amounts of baking soda and vinegar into sealable plastic bags, quickly seal the bags, and observe the reaction. The balanced chemical equation for the reaction is given here NaHCO3(aq) + CH.COOH(aq) → CO2(g) + H20(1) - NaCH,COO(aq) a) Use limiting reagent calculations to fill in the following table. Please show your work Trial Baking Vinegar (5% acetic acid) soda Amount of Co. (mol) If baking soda limiting Amount of Co. (mol) if vinegar limiting Limiting reactant Amount of co, formed (mol) A 0.256 10. mL B 0.758 8.0 mL C 15€ 5.0 mL b) Which Ziploc bag will inflate the most?

Answer 1

Na H co, (+ + CH cooh (1) ,(2) + 1 (0 Na C4 Coo (4) 5% Chcoon molar mass ch coon = 60gmolt Trial- A somi 5% CHCOOH - no of moles of Chcoon in Trial A 5X10 X L -0.0083 mal 100 GO - B 8.0 m2 54. cry coon nor of mole of Chcoon in Trial B - 8.0% 5X1-00067 malo 100 c- 5.om. 5% Ch Coon hoof male of Chh coon in Trial c. Too x = 0.0012 mal Baking soda Naklog molar mass .= 89 gnals 0.25g no-of male = 9.25 = 0.0030 onal 0.75g noof mole o 75 -0.0089 mol o 1.5g no of mole = 1.5 = 0.0179 mal Amountal Colmal) i when / Limiting / Armourt il Nation Limiting vingar Limiting reactant elco mal) I mot 0.0030 00030 0.0089 00067 0.0067 0.0179 0.0042 Nam coz 0.0030 I vinegar / 0.0642

(8) lyield = actual yield x 100 theoretic field % = 0·0052 X1001 0:0067 - 77.6% (9) 1 - 0.0035 X 100 - 83.3 %. 0.0012