For i CSTRs of variable volume in series, the residence time in the – McqOptions

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1.	For i CSTRs of variable volume in series, the residence time in the i^th reactor is ____
A.	<sub>i</sub> = ( frac{- C_i}{-r_i} )
B.	<sub>i</sub> = ( frac{C_{i-1}- C_i}{-r_i} )
C.	<sub>i</sub> = ( frac{C_i}{-r_i} )
D.	<sub>i</sub> = ( frac{C_{i-1}}{-r_i} )
Answer» C. <sub>i</sub> = ( frac{C_i}{-r_i} )

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