Chemical Reaction Engineering The rate of a gas phase reaction is given by K . CA . CB. If the volume of the reaction vessel is reduced to l/4th of its initial volume, then the reaction rate compared to the original rate will be __________ times. 2 16 8 4 2 16 8 4 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The most unsuitable reactor for carrying out reactions in which high reactant concentration favours high yields is Backmix reactor PFR in series Plug flow reactor Series of CSTR Backmix reactor PFR in series Plug flow reactor Series of CSTR ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A first order reaction requires two unequal sized CSTR. Which of the following gives higher yield ? 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 Data insufficient, can ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering If the pore diffusion controls in a catalytic reaction, the apparent activation energy Ea is equal to ED/2 (E + ED) where ED is activation due to diffusion (E + ED)/2 The intrinsic activation energy E ED/2 (E + ED) where ED is activation due to diffusion (E + ED)/2 The intrinsic activation energy E ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Reactions with high activation energy are Always reversible Temperature insensitive Very temperature sensitive Always irreversible Always reversible Temperature insensitive Very temperature sensitive Always irreversible ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering At a given value of E/R (ratio of activation energy and gas constant), the ratio of the rate constants at 500°K and 400°K is 2, if Arrhenious law is used. What will be this ratio, if transition state theory is used with the same value of E/R? 2 2.5 2.24 1.6 2 2.5 2.24 1.6 ANSWER DOWNLOAD EXAMIANS APP
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