Chemical Reaction Engineering The rate of the chemical reaction A → B doubles as the concentration of A i.e.., CA is doubled. If rate of reaction is proportional to CAn, then what is the value of n for this reaction? 1 0.5 2 1 0.5 2 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The residence time distribution of an ideal CSTR is 1/τ exp (-t/τ) Exp(-t/τ) 1/τ (-t/τ) Τ exp (-t/τ) 1/τ exp (-t/τ) Exp(-t/τ) 1/τ (-t/τ) Τ exp (-t/τ) ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering With increase in the order of reaction (for all positive reaction orders), the ratio of the volume of mixed reactor to the volume of plug flow reactor (for identical feed composition, flow rate and conversion) Remains same Increases Increases linearly Decreases Remains same Increases Increases linearly Decreases ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering With increase in temperature, the rate constant obeying Arhenious equation Increases Can either increase or decrease ; depends on the frequency factor Decreases exponentially Decreases Increases Can either increase or decrease ; depends on the frequency factor Decreases exponentially Decreases ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Promoter. All of these Increases the number of active centres by increasing the unevenness of catalyst surface and by creating discontinuities in the crystals Atlers the position of equilibrium in a reversible reaction Initiates a chemical reaction and is a catalyst by itself All of these Increases the number of active centres by increasing the unevenness of catalyst surface and by creating discontinuities in the crystals Atlers the position of equilibrium in a reversible reaction Initiates a chemical reaction and is a catalyst by itself ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The reaction rate almost gets doubled for 10°C rise in temperature. This is due to the fact that the Collision frequency increases Value of threshold energy decreases Increased temperature reduces the activation energy Fraction of molecules having threshold energy increases Collision frequency increases Value of threshold energy decreases Increased temperature reduces the activation energy Fraction of molecules having threshold energy increases ANSWER DOWNLOAD EXAMIANS APP
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