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Model Questions Sem in I

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  Sketch the graph to determine enthalpy of an isothermal process under chemical equilibrium condition? Articulate the chemical potential of a composition having two constituents at constant temperature and pressure? Define liquid crystal polymer with examples. Identify the advantages of applying liquid crystal polymer in engineering and medical sciences. Explain the mechanism of conduction in Poly-acetylene. Explain the energy of an ideal gas change if it is made to expand into vacuum at constant temperature? Calculate the change in enthalpy for the following reaction with equilibrium constants, K   p  = 50.0 at 448 ºC and 66.9 at 350 ºC, respectively. H 2 (g) + I 2 (g) = 2HI(g) Interpret the term critical micelle concentration (CMC). Compare and contrast between emulsion polymerization with suspension polymerization? Deduce the expression for van’t Hoff reaction isobar?   Relate ΔG and ΔA for an ideal gas system undergoing isothermal reversible expansion?  Classify cationic, anionic and neutral surfactant with examples? Comment and construct required equations to show Thermodyanamics of micellization  process? Define partial molar property and deduce the expression for Gibbs free energy? Define enthalpy and discuss the significance of work function? Define lyophillic and lyophobic colloids and compare them critically? Discuss the factors affecting the CMC of surfactants? State thermodynamic equilibrium and write expression for thermodynamic state equation? Define free energy, enthalpy, enthalpy and entropy and identify the relation among them? Explain different types of molecular weight method for polymers? How are they determined & expressed mathematically? Discuss the mechanism of free radical polymerization with all steps? Distinguish intensive and extensive properties with examples? State the entropy of a perfect crystal at zero temperature and give its significance? Define polymer? What are the different criteria for classification of polymer Explicate the factors responsible for altering CMC of surfactant molecules? (a) Illustrate the significance of partial molar property and discuss its determination by method of intercepts? (b) A chemist found that the energy of a system decreases during a specific spontaneous endothermic change in state. Comment? (a) Correlate any two factors which alters the rate of reaction? (b) Construct the following diatomic molecules in the ascending order of their standard entropies. H 2 , N 2 , HF, Cl 2 , NO   (a) Discuss the significance of third law of thermodynamics and mention two apparent exceptions? (b) Distinguish between micelle and reverse micelle (a) Compare solution and suspension polymerization (b) Classify polymers with examples? ( a) Deduce the relation between pressure and temperature for the condition of equilibrium  phase boundaries? (b) Deduce a correlation between the composition in liquid phase and the partial vapour pressures in the gaseous phase?  (a) Discuss the variation of chemical potential with temperature? (b) Discuss Nernst heat theorem and determine absolute entropy of a solid? (a) Sketch and explain solubilization of surfactants in water above CMC?  b) Construct the stochiometric equation for iodide reaction with  persulphate and predict the rate law with respect to each reactant? ( a) Interpret with mathematical expression the kinetics of polymerization? (b) the rate law for the reaction, 2Cl 2 O → 2Cl 2  + O 2  is given as, rate = k(Cl 2 O) 2  (i) predict the rate change if [Cl 2 O] is reduced to (1/3 rd ) of its srcinal value (ii) determine the concentration of [Cl 2 O] to be changed to double the rate (a)Illustrate the Clausius-Clapeyron expression for liquid vapour phase equilibrium? (b) Compare the significance of entropy by Plank’s formulation and Nernst heat theorem?  (a) Calculate the free energy change accompanying the compression of a gas under both ideal and non-ideal conditions at 57 ºC from 25-200 atm. The fugacities of the gas at 57 ºC may be taken as 23 & 91 atm.,respectively, at pressures of 25-200 atm. (b) Discuss Nernst heat theorem and determine absolute entropy of a solid? (a) Illustrate the mechanism of conduction in conducting polymer with any one example? (b) Discuss the principle of clock reaction of iodine? ( a) Demonstrate the concept of micro emulsion and formation of reverse micelle with an example? (b) Explain and illustrate the application aspect of fire resistant polymers
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