Q. In a lime kiln, to get higher yield of $CO_{2}$, the measure that can be taken is
A) To remove $CaO$
B) To add more $CaCO_{3}$
C) To maintain high temperature
D) To pump out $CO_{2}$
Explanation
(d)
$CaCO(s) \rightleftharpoons CaO(s) + CO_{2}(g)$
The equilibrium constant for this reaction is given by $K = \left\lbrack CO_{2} \right\rbrack($as$\ CaCO_{3}\$and$\ CaO\$are solid$)$.
Hence, to get more $CO_{2}$, we need to pump out continuously the $CO_{2}$ gas.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.