Q3: Toluene (C>Hg) reacts with H2 to form benzene (C6H6 desired product), but a side reaction occurs in which diphenyl (C12 H10, undesired product), is formed. C,Hg H2 - CH, + CH4 2C,Hg H2 - C12H10 + 2CH4 CHENG 111- Introduction to Chemical Engineering 2021-22 Sem 2 The process is shown in the figure below. Hydrogen is added to the gas recycle stream to make the ratio of H2 to CH4 1 to 1 before the gas enters the mixer. The ratio of H2 to toluene entering the reactor at G is 4 H2 to 1 toluene. The single- pass conversion of toluene is 88%, and the yield of benzene is 0.80. Based on 100 moles of toluene entering the reactor, calculate the following: a) molar composition of the reactor effluent using the extent of reaction approach. b) amount of gas recycle stream. c) molar composition of the purge stream. d) selectivity. e) overall conversion of toluene. f) Which reaction is predominating? Is it the main reaction or the side reaction? Why? Makeup M 100%H, Gas Recycle Re P Purge YH2 1 H2: 1CH, w YCH, CH, H2 G Reactor Separator B Mixer 100% C,H n, mol C, H, nz mol H, n, mol CH, n, mol C,H, ng mol C, H10 1C,H: 4 H2: 4CH, 100% C,H D Liquid Recycle RL 100% C2H10 100% C,H

3. Carbon tetrachloride (CC14) can be produced using the following reaction. If 34.535 grams of chlorine (Cl2) produced 28.550 g of CC14, what is the percent yield of this reaction? C(s) + 2 Cl2(g) CCI4(1)

Please answer question 3b

Write the balanced chemical equation for the complete combustion of heptene, C7H14. In combustion, hcpLcnc reacts with oxygen to produce carbon dioxide and water.What is the mole ratio that would enable you to calculate the number of moles of oxygen needed to react exactly with a given number of moles of heptene? What mole ratios would you use to calculate how many moles of each product form from a given number of moles of heptene?

Consider the following reactions: CaSO4(s) Ca²+ + SO4²- CaF₂(s) Ca²+ + 2F- Kso=10-4.59 Kso-10-10.3 a) What is the solubility of CaSO4(s) in water at 25 °C? b) What is the solubility of CaF2(s) in water at 25 °C? c) Will either of these two solids will precipitate if [F]=104 M, [SO4²¯]=10-³ M and [Ca²+]=10-² M?

amorphous To = 100 °C Tm= Polystyrene (PS) [CH₂-HC t semi-crystalline (-rapidly) T₂ = 100 °C Tm = 270 °C CH₂ HC CH₂ HC CH₂ HC CH₂ HC CH₂ semi-crystalline (→slowly) T₂ = 100 °C Tm= 240 °C Q2. Categorize the polymer Nylon 6 in terms a specific mode of assembly, reaction type, and mechanistic process. Provide a retrosynthetic analysis of the polymer and answer the following- c) Derive a monomer that could be employed to make Nylon 6 d) List the characteristic features of reaction type you mentioned above e) In theory, the polymer can be produced by either condensation, step- growth polymerization or by addition, chain-growth polymerization. Draw a generalized mechanistic process for step-growth synthesis of Nylon 6.

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Hydrodealkylation is a process in which side chain alkyl groups (like methyl) are removed from aromatics by reaction with hydrogen. The following reactions take place in the reactor: C6H₂CH3 + H₂C6H6 + CH4 C6H4(CH3)2 + H2CH₂CH3 + CH4 E3 C6H₂(CH3)3 + H₂C6H4(CH3)2 + CH4 In addition, an unwanted side reaction occurs, in which benzene dimerizes to form diphenyl [C6H5C6H5] E4 2 C6H6 C6H5C6H5 + H₂ A process stream containing 5 mol% benzene [CH], 20 mol% toluene [C6H5CH3], 35 mol% xylene [C6H4 (CH3)2], and 40 mol% pseudocumene [C6H3 (CH3)3] is fed to a hydrodealkylation plant. This process stream is mixed with hydrogen gas in 5:1 gas-aromatics ratio before being fed to the reactor. A condenser separates hydrogen and methane from the other reactor products (lumped as aromatics). Feed ?B ?T ? X ?? ?P Reactor Hydrogen Gas ? H₂ Light Gases ? H₂ ?M Condenser Aromatics ?B ~~~.. BTXPD ?T ?X ?P ?D 1 b. For a basis of 100 moles of Aromatics, the component balance for toluene can be written: 12.3 = ?…

Homework 3 - Chapter 5 - Thermochemistry Consider the reactions below: A2+2 C₂2 AC₂ A2+3 B22 AB3 2 B2+ C2 2 B₂C AH-150 kJ/mol AH-270 kJ/mol AH-280 kJ/mol Determine the enthalpy change for the following reaction using the information above. 4 AB3 +7C26 B₂C +4 AC2 AH: -480 Attempt: 4 (saved 2 minutes ago) 4444 7/11 tasks atten kJ/mol SAVE RESPONSE together to form the

Calculate the equilibrium concentration for hydroxide ions for a reaction of 0.0200 M Cr(OH)3(aq) with 0.200 M hydroxide to form tetrahydroxychromium (III) ion with a Kf = 3.00x1020.