Question

The reactions: A→B, r1 =k1 A→C, r2 =k2CA give 67% selectivity to the desired product B...

The reactions:

A→B, r1 =k1

A→C, r2 =k2CA

give 67% selectivity to the desired product B at 75% conversion of A in a CSTR with a reaction time of 1 min with CAo =2 moles/liter.

(a) What are the selectivity and conversion for this reaction and feed in a PFTR with τ = 1 min?

(b) What are the conversion and selectivity in this reactor if CAo =4 mole/liter?

(c) What τ and conversion will give 99% selectivity in a CSTR?

(d) Give short reasons why the trends in each of the above situations should be expected.

Engineering   Chemical-Engineering   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
The consecutive liquid phase reactions A (k1,r1) −−−→ B, B (k2,r2) −−−→ C; r1 = k1C2...
The consecutive liquid phase reactions A (k1,r1) −−−→ B, B (k2,r2) −−−→ C; r1 = k1C2 A, r2 = k2CB, occur in a batch reactor with initial composition CA = CA0, CA0 = 3 mol/L, CB0 = CC0 = 0. (a). Solve mass balances for A and B successively to obtain expressions for CA and CB versus t. The expression for CB will be in terms of an integral, which can be evaluated only numerically. Do not bother to evaluate...
During the liquid phase decomposition of A, two reactions compete. A one-half order reaction (k1 =...
During the liquid phase decomposition of A, two reactions compete. A one-half order reaction (k1 = 0.025 mol1/2/L1/2/sec) produces the desired product; whereas, a first order reaction (k2 = 0.008/sec) produces an unwanted impurity. The initial concentration of A to be used is 8 mol/L and 75% conversion of A is required. a) (7 points) If a CSTR is used to achieve this conversion, what would be the overall yield and selectivity of the desired product? b) (4 points) What...
Problem 1 Consider the liquid phase reaction A à products accelerated by a homogeneous catalyst dissolved...
Problem 1 Consider the liquid phase reaction A à products accelerated by a homogeneous catalyst dissolved in the solution. The observed rate data follows the form: -r=k1Ca/(1+K2Ca+K3(Ca^2)) You are asked to recommend either a steady CSTR or steady PFR. Your reactor must reduce the feed composition of 0.6 mole/liter down to 0.3 mole/liter in the effluent. • Create a plot of ordinate 1/(-rA) vs. abscissa CA. Use the data below. Use sufficient resolution in your plot to get a smooth...
Question 2 : Consider the following gas phase reactions: (flow reactor) Rxn 1 : A X 　...
Question 2 : Consider the following gas phase reactions: (flow reactor) Rxn 1 : A X 　 k1 = 0.004 (mol/dm3)1/2.min-1 Rxn 2 : A B - k2 = 0.3 min-1. Rxn 3 : A Y k3 = 0.25 dm3/mol/min B is the desired product and X and Y are the foul pollutants that are expensive to get rid of. The specific reaction rates are at 27 oC ( 300K). The reaction system is to be operated at 27 oC and...
Please show all work. Thank you. We want to isomerize a species A to form B...
Please show all work. Thank you. We want to isomerize a species A to form B in liquid solution. The rate for this process is r1 = k1CA. However, A can also dimerize to form a worthless and unreactive species C with a rate r1 = k1C2 A. Calculate the yield of B in a CSTR and in a PFTR if 90% of A is reacted if CAo =2 molar, k2 =0.2 liter/mole min,and k1 =0.1min1.How might conditions be altered...
Problem 2: Fogler 6-6 (a-g), pg. 363 Consider the following system of gas-phase reactions: A X...
Problem 2: Fogler 6-6 (a-g), pg. 363 Consider the following system of gas-phase reactions: A X ??? 1/2 X A 1 r kC = 3 1/2 1 k = ? 0.004 (mol/dm ) min A B ??? B A 2 r kC = 1 2 k 0.3 min? = A ???Y 2 Y A 3 r kC = 3 3 k = ? 0.25 dm /mol min B is the desired product, and X and Y are foul pollutants that...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT