A 1) Justify- Molecularity of reaction can never be more than three. 2) Why can the order of reaction be zero, but the molecularity of a reaction cannot be? 3) Define an intermediate. What are the different types of intermediates that are suggested by the chemistry of the materials? B Discuss merits and demerits of batch and continuous modes of reactor operation. C Ahuman being (75 kg) consumes about 6000 kJ of food per day. Assume that the food is all glucose and that the overall reaction is C H O + 6O → 6CO + 6H O, -∆Hr = 2816 kJ Find man's metabolic rate (the rate of living, loving, and laughing) in terms of moles of oxygen used per m3 of person per second. (Assume density of man = 1000 kg/m3)
A The activation energy of a bimolecular reaction is about 9150 cal/mol. How much faster does this reaction take place at 500 Kthan at 400 K? B Write a short note on temperature dependency of reaction rate constant from Arrhenius law. Compare the same with transition state and collision theories. C The reaction between nitric oxide and oxygen given below 2NO +O → 2NO22 follows the rate law − d[O2 ] = k[NO]2[O ]2 dt Suggest a reaction mechanism which is consistent with this rate law.
[7 marks]C Explain theory – Analysis of total pressure data obtained in constant-volume system.
[7 marks]A On doubling the concentration of the reactants, the rate of reaction increase four times. Find the order of reaction. B It is stated that the half-life method for finding reaction order can be used to any fractional-life data. Do this, defining t as the time required for the concentration 1/m of the reactant to drop to 1/mth of its original/initial value. C Prove that Nnumber of plug flow reactor connected in series and its total volume Vgives the same conversion as a single plug flow reactor of volume V.
[7 marks]A Differentiate between Integral and Differential method of analysis for analysing batch reactor data. B Define: Space time, Space velocity, Holding time, Mean residence time. C Derive performance equation for steady-state mixed flow reactor and discuss fractional conversion in terms of Damkohler number.
[7 marks]A Define an equilibrium state and discuss characteristics of chemical equilibrium. B What is the use of tracer? Discuss desired characteristics of tracer. C Discuss the effect of pressure on equilibrium conversion as predicted by thermodynamics keeping temperature fixed.
[7 marks]A Discuss effect of temperature on heat of reaction. B Sketch and explain RTD curves for Ideal Plug Flow Reactor and Ideal Mixed flow Reactor. C Discuss the effect of temperature on equilibrium conversion as predicted by thermodynamics keeping pressure constant.
[7 marks]A Classify chemical reactions on the basis of (a) number of phases involved and (b) heat or reaction with suitable example. B Which are various non-idealities that can exist in a reactor? Also suggest solution to remove such non-idealities from the reactor. C Write a short note on Qualitative product distribution for reactions in parallel.
[7 marks]A Explain the method for searching the mechanism of chemical reaction. B Explain equal sized mixed flow reactors connected in series. C Derive the performance equation of recycle reactor and discuss its graphical representation for constant and variable density.
[7 marks]