A. Pressure and temperature only
B. Temperature and composition only
C. Pressure and composition only
D. Pressure, temperature and composition
Related Mcqs:
- For a homogeneous reaction of nth order, the dimension of the rate constant is given by_________________?
A. 1/(time)n
B. (Concentration)1 – n/(time)
C. (Concentration)n – 1/(time)
D. None of these - The rate of a homogeneous reaction is a function of__________________?
A. Temperature and pressure only
B. Temperature and composition only
C. Pressure and composition only
D. All temperature, pressure and composition - The rate controlling step for the heterogeneous irreversible catalytic reaction A(g) + B(g) → C(g) is the surface reaction of absorbed A with absorbed B to give adsorbed C. The rate expression for this reaction can then be written as (where, KA, KB and KC are the equilibrium constants and is the rate constant of the rate controlling step) ?
A. k KA pApB / (1 + KApA + KBpB)
B. k KAKB pApB / (1 + KApA + KBpB)
C. k KAKB pApB / (1 + KApA + KBpB + KCpC)
D. k KAKB pApB / (1 + KApA + KBpB + KCpC)2 - The rate of reaction does not decrease appreciably as the reaction proceeds in case of ______________ reactions?
A. Autocatalytic
B. Exothermic
C. Endothermic
D. Autothermal - For identical flow rate, feed composition and for elementary first order reactions, ‘N’ equal sized mixed reactors in series with a total volume ‘V’ gives the same conversion as a single plug flow reactor of volume ‘V’ for constant density systems. This is true, when the value of ‘N’ is ___________________?
A. 1
B. > 1
C. ∞
D. ≥ 1 - For the irreversible elementary reactions in parallel as shown in the bellow figure, the rate of disappearance of ‘X’ is equal to_______________?
A. CA (K1 + K2)
B. CA (K1 + K2)/2
C. CA . K1/2
D. CA . K2/2 - In solid catalysed reactions the diffusional effects are more likely to affect the overall rate of reaction for________________?
A. Fast reactions in catalyst of small pore diameter
B. Fast reaction in catalyst of large pore diameter
C. Slow reactions in catalyst of small pore diameter
D. Slow reactions in catalyst of large pore diameter - In case of _____________ reactions, the reaction rate does not decrease appreciably as the reaction proceeds?
A. Catalytic
B. Parallel
C. Series
D. Auto catalytic - Pure ethanol vapor is fed to a reactor packed with alumina catalyst, at the rate of 100 kmole / hr. The reactor products comprise: ethylene: 95 kmole / hr, water vapour: 97.5 k mole / hr and diethyl ether: 2.5 kmole/hr. The reactions occuring can be represented by: C2H5OH → C2H4 + H2O 2C2H5OH → C2H5 – O – C2H5 + H2O The percent conversion of ethanol in the reactor is________________?
A. 100
B. 97.5
C. 95
D. 2.5 - Which of the following is not a theory of homogeneous reaction ?
A. Collision theory and activated complex theory
B. Chain reaction theory
C. Radiation hypothesis
D. None of these