ZuoTi.Pro
Question

b. The rate law for the reaction (2A+B+C) is -ra=KACA CB, with ka=25 (dm /mol) /s. What are kB and kc?

engineering   Chemical-Engineering   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

for the above elementary reaction, the rate of reactions with respect to A, B and C are:

-r_A=K_A\ C_A^2\ C_B\\\\ -r_B=K_B\ C_A^2\ C_B\\\\ r_C=K_C\ C_A^2\ C_B\\\\

and from the elementary reaction given, the rate of reactions are related as:

\frac{-r_A}{2}=-r_B=r_C

hence we get:

\frac{K_A}{2}=K_B=K_C

substituting the values:

K_B=\frac{K_A}{2}\\\\ \Rightarrow K_B=\frac{25\ (dm^3/mol)^2/s}{2}\\\\ \Rightarrow K_B=12.5\ (dm^3/mol)^2/s

and,

K_C=K_B=12.5\ (dm^3/mol)^2/s

hence,

K_B=12.5\ (dm^3/mol)^2/s\\\\ K_C=12.5\ (dm^3/mol)^2/s\\\\

0 0
Add a comment
Know the answer?
Add Answer to:
b. The rate law for the reaction (2A+B+C) is -ra=KACA CB, with ka=25 (dm /mol) /s....
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. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • A reaction 2A → P has a second-order rate law with kf = 1.44 dm3 mol-1...

    A reaction 2A → P has a second-order rate law with kf = 1.44 dm3 mol-1 s -1 . Calculate the time required for the concentration of A to change from 0.460 mol dm-3 to 0.046 mol dm-3 .

  • The reaction 2A + 2B → M + N has the rate law: Rate = k[A]2....

    The reaction 2A + 2B → M + N has the rate law: Rate = k[A]2. At 25°C, k = 0.0311 L mol-1 s-1. If the initial concentrations of A and B are 0.321 M and 0.499 M, respectively. What will be the concentrations of A and B after 30.0 minutes?

  • For the following reaction: 2A + B → 2 C The rate law is determined to...

    For the following reaction: 2A + B → 2 C The rate law is determined to be: rate = 0.4357 [A][B]   What will be the initial rate (in M/s) if initial concentrations are: [A] = 0.500 M, [B] = 1.54 [M]

  • For the reaction 2A --> B + ½ C, answer the following questions: a.If –rA =...

    For the reaction 2A --> B + ½ C, answer the following questions: a.If –rA = 10 mol L-1 min-1, calculate the rate of reaction with respect to Band C, rB and rC, respectively. b.10 moles of A are fed to a reactor. If 70% conversion occurs, calculate the moles of all chemical species. Are the total moles conserved during the course of reaction? c.The reaction order with respect to A is 2.0. Provide the units that would be possessed...

  • For a constant volume batch reactor, solve for the temporal concentration profiles, e.g. CA(t) and CB(t)...

    For a constant volume batch reactor, solve for the temporal concentration profiles, e.g. CA(t) and CB(t) at each initial condition (IC) Given) Reversible elementary reaction kA (forward) A B ka (backward) dCkCkC dt dCkC-kC, dt k 0.0001s) k0.00005(s 1 IC at t-0, CAO= 0.5 (mol/dm) and CBo 0 (mol/dm IC at t-0, CAO 0.5 (mol/dm') and CBo 0.2 (mol/dm 2. Using any ODE solver, solve the coupled ODEs for two initial conditions Need to submit graphs (CA and CB vs...

  • You are given the rate equation −rA" = -kA" CA for the liquid-phase reaction A--->B. Inlet...

    You are given the rate equation −rA" = -kA" CA for the liquid-phase reaction A--->B. Inlet flow rates are 100 mol/s of pure A, which has a density of 1000 kg/m3 and a molar mass 1000 g/mol. The rate constant is 1x10-6m/s. You are told the reactor has a catalyst of surface area Sg of 5 m2/g, and the catalyst density in the reactor  is 25 kg/m3. a.  To achieve 50% conversion in an isothermal steady-state CSTR, what is the volume required?...

  • The rate law for the reaction 2A + B - C is found to be rate...

    The rate law for the reaction 2A + B - C is found to be rate = k[A]2. If the concentration of A is decreased by half, what will happen to the rate of the reaction? O a. The rate will double. The rate will decrease by half. The rate will decrease by a factor of 4. O d. This cannot be determined unless we know how [B] changed. The rate will decrease by In(A). b. C. e. a. Which...

  • 15. At 25°C, k = 1.55 dm mol 2 min' at an ionic strength of 0.0241...

    15. At 25°C, k = 1.55 dm mol 2 min' at an ionic strength of 0.0241 for a reaction in which the rate-determining step involves the encounter of two singly charged cations. Use the Debye-Hückel limiting law to estimate the rate constant at zero ionic strength.

  • 2. The rate of the reaction 2A+B → has been observed at 25°C. From the following...

    2. The rate of the reaction 2A+B → has been observed at 25°C. From the following data, determine the rate law for the reaction and calculate the rate constant. Experiment ) 2 3 4 5 Initial IAI(M) 0.100 0.200 0.400 0.100 0.100 Initial ( B M 0.100 0.100 0.100 0.300 0.600 Initial rate (M/s) 5.50 x 106 2.20 x 10 8.80 x 10 1.65 x 10 3.30 x 10

  • 5. An elementary reaction has the form 2A → B. The rate law is Rate A)...

    5. An elementary reaction has the form 2A → B. The rate law is Rate A) k[A] B) 2 k[A] C) k? [A] D) k[A] 6. For some reaction, when concentration of reactant "A" doubles, the rate of the reaction doubles. The reaction is order in reactant A. B) 1" A oth C) 2nd D) 3rd 7. Tetrahydrofuran (commonly referred to as THF) is an organic solvent with a density of 0.889 g/mL. A solution is prepared by dissolving 11.8...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT