Question

Question Completion Status: QUESTION 1 10 points A hydrocarbon gas is burned with air. The dry-basis (without H20) product gas composition is 1.5 mole% CO, 6 mole% CO2, 8.2 mole% O2, and 84.3 mole% N2. ne(mol C) (mol no (malain (100 mol dry gas 0.21 mol Oymol 0.015 mol COmol dry gas 0.79 mol Ny/mol 0.060 mol CO2 mol dry gas 0.082 mol Oz moi dry g 0.843 mol Nymol dry gas "wmol H20) 1. Using the method of atomic balance, prove that this fuel is methane (CH4) (need to calculate the ratio of ny to no) 2. If the following combustion reactions takes place: CH4 +202 - CO2 + 2H20 and CH, +(3/2) O, CO + 2 H2O Calculate the % excess air fed to the reactor. 3. What is the selectivity of CO2 to CO? 4. What is the percentage yield of CO2? TTT Arlal3 (12pt) TEES

Answer 1

Given Product contain 1.5mole). Co 6 moll CO2, 8.2 molet. 0, +84.3 mol - Mz les Basis 10o moles of product obtained, o, mole of coa = 1. Smoles, moles of CO2 = 6mols moles of Og J.2 moles, moles of M2 = 84.3 moles a Mris inert fel, Now mole of o supplied = 84.38 79 = 22.4 moles to trovo 21 Convereted What the mole of Of we got in product that is unused / un reacted On 0.2 moles. co need a moles of Os to got fully convereted into Co. Cof ye Oos-cents Oq m excess = $ 99.2 - 15 2 7:45 moles 2 theorectical required a 22.410 7.45=14.96 O insupply- og inexcusa b) % excess of on: moles of Qarne russ gloo of theoretical required = 7:45 X1002 49.8.7. 14.96 Scanned with CamScanner

- (1) On applying a balance, hatt Catom in product = Cincoat (in CO2 bood Flismt 6 27.5 ! Qu balance - Os in supply = Op for too for & O, for 0 (rotho260) (tolo Hq tophao to, cinegetid) 22.4 + 6 + x + 8.2 ) Por a=7.46 ( This is amount of a required to . converted ų into H2O) Н2 + 49— Иго H₂ reacted = 2x7.46 = 14.92 . Hreacted = 2x14.9.2 8 29.84 How ratio ofat inste /u 7. su 9 t o Hence prooved - (c) selectivity of coa to co a Ratio of moles of coa formed to cs Scanned with Rato of moles of co formed Scanned with CamScanner = 6 xetero = 4onit 14 (d) 7. yield of coa = moles of coa formed xico moles of coa formed if co ter will nok form 671.s x100 stuks XICO sa por cs Scanned with | CamScanner