Chemical Reaction Engineering With increase in temperature, the rate constant obeying Arhenious equation Decreases exponentially Can either increase or decrease ; depends on the frequency factor Decreases Increases Decreases exponentially Can either increase or decrease ; depends on the frequency factor Decreases Increases ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Enzymes (a protein) are catalysts found in organisms. Its efficiency of catalysing a reaction is due to its capacity to lower the activation energy of the reaction. The enzyme ptyalin used for food digestion is present in Intestine Gland Saliva Blood Intestine Gland Saliva Blood ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A typical example of an exothermic reversible reaction conducted at high pressure in industry is Methanol synthesis Reformation of methane Dehydration of ethanol Polymerisation of ethylene Methanol synthesis Reformation of methane Dehydration of ethanol Polymerisation of ethylene ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The rate expression for a heterogenous catalytic reaction is given by, - rA = K.KA PA(1 + KA.PA + Kr.PR), where K is surface reaction rate constant and KA and KR are absorption equilibrium constants of A and R respectively. If KR PR >> (1 + KA PA), the apparent activation energy EA is equal to (given E is the activation energy for the reaction and ΔHR and ΔHA are the activation energies of adsorption of R and A) E ΔHA + ΔHR E + ΔHA E + ΔHA - ΔHR E ΔHA + ΔHR E + ΔHA E + ΔHA - ΔHR ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering According to the 'law of mass action', the rate of reaction is directly proportional to the Volume of the reaction vessel Molar concentration of the reactants Equilibrium constant Nature of the reactants Volume of the reaction vessel Molar concentration of the reactants Equilibrium constant Nature of the reactants ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering An irreversible aqueous phase reaction, A + B → P, is carried out in an adiabatic mixed flow reactor. A feed containing 4kmole/m³ of each A and B enters the reactor at 8m³ /hr. If the temperature of the exit stream is never to exceed 390 K, what is the maximum inlet feed temperature allowed?(Data: Heat of reaction = - 50 kJ/mole, Density of the reacting mixture = 1000kg/m³, Specific heat of reacting mixture = 2kJ/kg.K)The above data can be assumed to be independent of temperature and composition. 490 290 390 190 490 290 390 190 ANSWER DOWNLOAD EXAMIANS APP
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