1.

A liquid phase reaction occurring in a CSTR follows first order dynamics. The feed rate is 500m^3/min. Initial concentration of the feed is 50mol/m^3. If the reaction conversion is 50% and the reaction is carried out in a 0.5 m^3 CSTR, what is the value of rate constant?(a) 40(b) 20(c) 10(d) 5

Answer» The correct answer is (b) 20

Explanation: FA0 XA = (-rA)V

(-rA) = kCA0(1 – XA)

500 × 0.5 = k × 50 × (1-0.5) × 0.5

k = 20.


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