Heat is transferred from one fluid to a second fluid across a metal wall. The film coefficients are 1.2 and 1.7kW m^-2 K^- 1. The metal is 6-mm thick and has a thermal conductivity of 19 W m^-1 K^-1. On one side of the wall there is a scale deposit with a fouling factor estimated at 19 W m^-1 K^-1. What is the overall heat-transfer coefficient?

TLS Online TPP Program

#Question id: 27188

#Section 5: Bioprocess Engineering and Process Biotechnology

k for a zero order reaction is 2×10^-2 mol/L s. If the concentration of the reactant after 25s is 0.5 M. Calculate the initial concentration of the reactant.

TLS Online TPP Program

#Question id: 27189

#Section 5: Bioprocess Engineering and Process Biotechnology

How long will it take for the initial concentration of A to fall from 0.20 M to 0.075, if the rate constant for a reaction of zero-order in A is 0.035 mol L^–1 s^–1.

TLS Online TPP Program

#Question id: 27190

#Section 5: Bioprocess Engineering and Process Biotechnology

A substrate is consumed in a zero order reaction such that the concentration falls from 40 g/l to 20 g/l in 4 h. How long will it take the substrate to fall from 20 g/l to 2 g/l:

TLS Online TPP Program

#Question id: 27191

#Section 5: Bioprocess Engineering and Process Biotechnology

The half-life of a zero order reaction is 30 minutes. What is the concentration of the reactant left after 60 minutes?

TLS Online TPP Program

#Question id: 27192

#Section 5: Bioprocess Engineering and Process Biotechnology

Q) For a single substrate reaction, doubling the substrate concentration increases the rate by 10 fold. The order of the reaction is

TLS Online TPP Program

#Question id: 27193

#Section 5: Bioprocess Engineering and Process Biotechnology

In a first order reaction, 10% of the reactant is consumed in 25 minutes. Calculate : 

(1) The half-life period of the reaction