Chemical Reaction Engineering For the liquid phase parallel reactions:R, rR = K?.CA2; E? = 80 KJ/moleS, rS = K?.CA ; E? = 120 KJ/mole The desired product is R. A higher selectivity of R will be achieved, if the reaction is conducted at High temperature in a CSTR Low temperature in a PFR High temperature in a PFR Low temperature in a CSTR High temperature in a CSTR Low temperature in a PFR High temperature in a PFR Low temperature in a CSTR ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The equilibrium constant of chemical reaction __________ in the presence of catalyst. Can either increase or decrease (depends on the type of catalyst) Increases Remains unaffected Decreases Can either increase or decrease (depends on the type of catalyst) Increases Remains unaffected Decreases ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Transition state theory relates the above quantities as K ∝ T1.5 K ∝ T.eE/RT K ∝ √T K ∝ e-E/RT K ∝ T1.5 K ∝ T.eE/RT K ∝ √T K ∝ e-E/RT ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The rate constant of a chemical reaction increases by 100 times when the temperature is increased from 400 °K to 500 °K. Assuming transition state theory is valid, the value of E/R is 9210°K 8764°K 8621°K 8987°K 9210°K 8764°K 8621°K 8987°K ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A first order reaction requires two unequal sized CSTR. Which of the following gives higher yield ? Data insufficient, can Large reactor followed by smaller one Either of the arrangement A or B will give the same yield Smaller reactor followed by larger one Data insufficient, can Large reactor followed by smaller one Either of the arrangement A or B will give the same yield Smaller reactor followed by larger one ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The concentration of A in a first order reaction, A → B, decreases Logarithmically with time Exponentially with time Very abruptly towards the end of the reaction Linearly with time Logarithmically with time Exponentially with time Very abruptly towards the end of the reaction Linearly with time ANSWER DOWNLOAD EXAMIANS APP
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