saplinglearningcom OCHM111309ASP18 Northern Virginia Communi

saplinglearning.com O.CHM.111.309A.SP18 Northern Virginia Community College, Alexandria-CHM 111 - Spring Chlorine Jump to... 2/26/2018 12:00 AM O 3.6/5 ( 2/25/2018 10:17 PM Gradeboo Calculator IncorrectIncarrect -Print -d Periodic Table Question 11 of 13 Map Sapling Learning gas can be prepared in the laboratory by the reaction of hydrochiloric acid with manganese(iy) oxide: You add 43.3 g of MnO2 to a solution containing 43.7 g of HCI. (a) What is the limiting reactant? HC (b) What is the theoretical yield of Ch? Number 70.29 CI (c) If the yield of the reaction is 763%, what is the actual yield of chlorine? Number 53.63 g CI Exit ePrev ous Give Up & View Souton OCheck Answer ONect about us careers privacy policy e of use contact us help

Solution

a) according to balanced reaction

4 x 36.5 g HCl reacts with 86.94 g MnO2

43.7 g HCl reacts with 43.7 x 86.94 / 4 x 36.5 = 26.02 g MnO2.

but we have 43.3 g MnO2. so MnO2 present in exess.

limiting reagent = HCl

limiting reagent = HCl

b) 4 x 36.5 g HCl gives 71 g Cl2

43.7 g HCl gives 43.7 x 71 / 4 x 36.5 = 21.25 g

therotical yield of Cl2 = 21.25 g

c) % yield = (actual yield / therotical yield) x 100

76.3 = (actual yield / 21.25) x 100

0.763 = actual yield / 21.25

actual yield = 16.21 g