Question

Refer to Q5 and, calculate: An error is made determining the steady-state oxygen level which, instead of 78%, is taken as 70%. What is the percentage error in kLa resulting from this 10% error in \(\bar{C_{AL}}\)?

(a) 50%

(b) 25%

(c) 75%

(d) 100%

I had been asked this question during an interview.

This intriguing question originated from Measurement of KLa topic in portion Mass Transfer of Bioprocess Engineering

Answer 1

Right option is (d) 100%

For explanation I would say: If \(\bar{C_{AL}}\) is taken to be 70% air saturation:

The error in kLa is almost 100%.