Question

for problems 3-6, refer to the following balanced equation: 2C2H2(g) + 5O2(g) + 4CO2(g) + 2H2O(0) 3. How many moles of CO2 are produced when 18 moles of O2 reacts? 4. How many grams of water (H20) are produced from 8.4 moles of CH2?! 5. How many grams of O2 react with 7.32 g of CzHz? During an experiment, 5.19 g of oxygen (O2) reacted with excess C2Hz to produce 4.38 g of CO2. Determine the percent yield of CO2 in this reaction?

Answer 1

2H,00) +502(0) 18 mal of mole op 02 reask 37 no 5 mal O proelue y mos co2 frem , en 18 mal O2 proeluue 14. mol O 5 Hene, 4.y mollO2 ane poeluueal when 18 moles of mole of C 8.y mele H2 Proeluie mol Ho fren no ea en 2 mol 8. mo 8.4 mol H0 proele So no af made of H20 proelucal8.4 mos mas H2 pro duceal n melan mas 8.4mel x 18/ma 151.2 3 a of oatr ane. proeleceeal from 8.4males of H2 Henue, IS1.2 S maus of H =7.32 7.329 no o male of H mas 0.28151 mo0 Molanmaus react toitth 5 mol O rom e n 2 male o.281S4 mol H2 react oith D.281S4 0.10385 mol O2 mas of 0, veaut o.70385 mol x 32. 9/mal 22.59 3 of O2 reait wi, 7.32 g of Hs 22.5 Hence,

GY maus of O2 5.19 no. of mole of 0z Maus 6.199 molan mans 32 g/mal 0.1622 mo o tromeg hen mole mol 02 proeluie xo.1622 = o.13 mo C0 5 0.1622 mol O Produue = o-13 mo no. of mole of o pocluteel o.13 mo X /me maus of Lo procluucal = S.129 ke, Theoritical yielal of o,=3.724 AActual yielal of Co 4.38 g Acheal yielol 4.389 /. yieoal x loo Thconhtal yielol 5.12 3 76.57% 76.57%. in taia reathon. Hene, The percent yielol of