The equation below describes the degree of polymerisation for a radical polymerization (ignoring side reactions such as diproportionation) Rp is the rate of polymerization, what are CM and C₁? 1/X = R₁/2R + CM+C₂[I]{[M] CM = 8.0x10-5 C₁ = 3.2x10-4 Calculate the expected M, of a polymer when 1.0 M Styrene solution in toluene is reacted with 0.01 M di-tert-butylperoxide. The initiation rate (R₁) is 4.0 x 10-11 mol L s 1 and polymerization rate is 1.5 x 10-7 mol L s¹. Use the equation from Q8. Repeat the calculation for an initiator concentration of 0.3 M. Why is it lower?

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1) The condensation reaction between a hydroxyl group and a carboxylic group is found to follow the following rate law: -d[COOH]/dt = -d[OH]/kt = K[COOH][OH] where K has the value of 10-2 L/mol sec. What is the conversion of carboxylic acid and number-average molecular weight of the polymers formed after 60 hours of reaction in the following systems. a) 1 mole of butoxyl acid HO(CH2)4COOH. Add solvent to make 10 liters. b) 0.47 mole of terephthalic acid HOOC-(C6H4)-COOH and 0.5 mole of ethylene glycol HO-CH2CH2-OH. Add solvent to make 10 liters. 1) The condensation reaction between a hydroxyl group and a carboxylic group is found to follow the following rate law: -d[COOHJ/dt = -d[OH]/kt = K[COOH][OH] where K has the value of 102 L/mol sec. What is the conversion of carboxylic acid and number-average molecular weight of the polymers formed after 60 hours of reaction in the following systems. a) 1 mole of butoxyl acid HO(CH2)ĄCOOH. Add solvent to make 10 liters. b) 0.47 mole of…

An elementary reaction is generally expressed as: dC :-kC," dt where A is the species being depleted as the reaction progresses, k is the rate constant, and n is the order of reaction, usually referred to as the stoichiometric coefficient of the resulting product. For a polymerization reaction A> 3B, find the initial amount if after 30 seconds, A species is reduced to 5 moles/L within 3 minutes. Take the rate constant as 0.314 L?/(molľ²-min).

Give clear handwritten answer- Derive an expression for the time dependence of the degree of polymerization (the average number of monomer residues per polymer molecule) for a condensation polymerization in which the reaction is known to have rate law d[M]/dt = -k[M] 3 , where [M] represents the concentration of the monomer!

An elementary reaction is generally expressed as: dC, = -kC," dt where A is the species being depleted as the reaction progresses, k is the rate constant, and n is the order of reaction, usually referred to as the stoichiometric coefficient of the resulting product. For a polymerization reaction A> 3B, find the initial amount if after 30 seconds, A species is reduced to 5 moles/L within 3 minutes. Take the rate constant as 0.314 L'/(moP-min).

Living chain polymerization of monomer X follows the first-order kinetics. The corresponding propagation rate constant (kp) was determined by gas chromatography (GC), with the following monomer concentrations measured at different polymerization times, assuming instant initiation: Polymerization time (min) 0 2 5 10 15 [X]t (M) 1.80 1.52 1.27 0.95 0.74 0.50 0.25 20 30 Plot the dependence of -In([X]/[X]) on time using software specialized for graphs (e.g., Origin, SigmaPlot, not MS Excell!) and perform the linear data fitting. Export the graph in TIFF format and paste it below as an image. Make sure the graph is graphically appealing! b) From this fitting, calculate the kp of polymerization, assuming the living character of polymerization and an initial initiator concentration (an thus the constant concentration of growing centers) of 0.09 M c) What is the theoretical degree of polymerization (DP) of the prepared polymer? We assume full monomer conversion, complete initiation, absence of…

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Subject  :- Chemistry

The acid-catalyzed hydrolysis of sucrose, C12H22O11 + H₂O + H+ -> C6H12O6 + C6H12O6 + H+ is known as "inversion of sucrose" because the angle, a, by which the solution rotates polarized light changes from positive to negative as the reaction proceeds (data from 30 degree C): t/hr a 0 78 2 71 4 12 18 24 42 65.10 44.60 32.40 22.45 2.30 48 -1.96 61 -9 86 95 -15.80 -17.25 -21.15 ∞ Use this data to show that the reaction is first order and determine its rate coefficient (at 30 degree C).