Chemical Engineering CSTR with heat exchangerHints:

When we run the reaction in an adiabatic reactor, the exit temperature is increased as compared to

isothermal reactor $(350K$ vs $300K),$ it indicates the reaction is exothermic $(H_{Rx}$ is negative$).$ We can use

the adiabatic energy balance equation to find out the reaction heat $H_{Rx},$ and then go back to look at

energy balance for the isothermal CSTR $($the first reactor$),$ to find out heat removed by coolant, $Q$ is

negative value.

Use CSTR with heat exchanger energy balance equation and mole balance equation to find out exit

conversion from the second CSTR$.$

Use differential form of energy balance and mole balance to solve the exit conversion from downstream

PFR$.$