Question

Consider the reaction A+2B⇌C whose rate at 25 ∘C was measured using three different sets of...

Consider the reaction

A+2B⇌C

whose rate at 25 ∘C was measured using three different sets of initial concentrations as listed in the following table:

Calculate the initial rate for the formation of C at 25 ∘C, if [A]=0.50M and [B]=0.075M.

Express your answer to two significant figures and include the appropriate units.

Trial [A]
(M)
[B]
(M)
Rate
(M/s)
1 0.35 0.010 1.5×10−3
2 0.35 0.020 2.9×10−3
3 0.70 0.010 5.9×10−3

Homework Answers

Answer #1

1st we need to find the arte law

Let the rate law be written as
rate = K [A]^x * [B]^y

consider trial 1 and trial 2 , here [A] is same.
[B] doubles and rate also doubles approximately
So y=1

consider trial 1 and trial 3 , here [B] is same.
[A] doubles and rate becomes 4 times approximately
So x=2

so,
above arte law becomes,
rate = K [A]^2 * [B]
put the values from trial 1 to find K
rate = K [A]^2 * [B]
1.5*10^-3 = K *(0.35)^2 * (0.01)
K = 1.22

SO rate law is
rate = 1.22 * [A]^2 * [B]

put [A] = 0.50 M and [B] = 0.075 M

rate = 1.22 * [A]^2 * [B]
           = 1.22 * (0.5)^2 * (0.075)
           = 0.023 M/s
Answer: 0.023 M/s

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Consider the reaction A+2B⇌C whose rate at 25 ∘C was measured using three different sets of...
Consider the reaction A+2B⇌C whose rate at 25 ∘C was measured using three different sets of initial concentrations as listed in the following table: Trial [A] (M) [B] (M) Rate (M/s) 1 0.15 0.010 2.7×10−4 2 0.15 0.020 5.4×10−4 3 0.30 0.010 1.1×10−3 Calculate the initial rate for the formation of C at 25 ∘C, if [A]=0.50M and [B]=0.075M. Express your answer to two significant figures and include the appropriate units.
Constants | Periodic Table Consider the reaction A+2B⇌C whose rate at 25 ∘C was measured using...
Constants | Periodic Table Consider the reaction A+2B⇌C whose rate at 25 ∘C was measured using three different sets of initial concentrations as listed in the following table: Trial [A] (M) [B] (M) Rate (M/s) 1 0.50 0.050 1.5×10−2 2 0.50 0.100 3.0×10−2 3 1.00 0.050 6.0×10−2 Part a Calculate the initial rate for the formation of C at 25 ∘C, if [A]=0.50M and [B]=0.075M. Express your answer to two significant figures and include the appropriate units. View Available Hint(s)...
For the reaction A+B+C→D+E, the initial reaction rate was measured for various initial concentrations of reactants....
For the reaction A+B+C→D+E, the initial reaction rate was measured for various initial concentrations of reactants. The following data were collected: Trial [A] (M) B] (M) [C] (M) Initial rate (M/s) 1 0.30 0.30 0.30 9.0×10−5 2 0.30 0.30 0.90 2.7×10−4 3 0.60 0.30 0.30 3.6×10−4 4 0.60 0.60 0.30 3.6×10−4 rate=k[A]^m[B]^n What is the value of the rate constant k for this reaction? Express your answer to two significant figures and include the appropriate units. Indicate the multiplication of...
For the reaction A+2B→2C, the rate of reaction is 1.82×10−5 Ms−1 at the time when [A]=...
For the reaction A+2B→2C, the rate of reaction is 1.82×10−5 Ms−1 at the time when [A]= 0.3585 M a)What is the rate of formation of C? b)What will [A] be 1.00 min later? c)Assume the rate remains at 1.82×10−5 Ms−1 . How long would it take for [A] to change from 0.3585 M to 0.3505 M ? Express your answer using two significant figures
For the reaction A+B+C→D+E, the initial reaction rate was measured for various initial concentrations of reactants....
For the reaction A+B+C→D+E, the initial reaction rate was measured for various initial concentrations of reactants. The following data were collected: Given the data calculated in Parts A, B, C, and D, determine the initial rate for a reaction that starts with 0.45 M of reagent A and 0.90 M of reagents B and C? Trial [A] (M) [B] (M) [C] (M) Initial rate (M/s) 1 0.50 0.50 0.50 1.5×10−4 2 0.50 0.50 1.50 4.5×10−4 3 1.00 0.50 0.50 6.0×10−4...
determine the initial rate for a reaction that starts with 0.85 M of reagent A and...
determine the initial rate for a reaction that starts with 0.85 M of reagent A and 0.70 M of reagents B and C? Express your answer to two significant figures and include the appropriate units. Indicate the multiplication of units explicitly either with a multiplication dot or a dash. For the reaction A+B+C→D+E, the initial reaction rate was measured for various initial concentrations of reactants. The following data were collected: Trial [A](M) [B](M) [C](M) Initial rate (M/s) 1 0.30 0.30...
Using the given data, determine the rate constant of this reaction:    A+2B ----> C+D Trial                 [A]...
Using the given data, determine the rate constant of this reaction:    A+2B ----> C+D Trial                 [A] (M)                  [B] (M)                     Rate (M/s) 1                       0.320                     0.300                      0.0121 2                       0.320                      0.600                     0.0121 3                       0.640                      0.300                      0.0484
For the reaction A+B+C→D+E, the initial reaction rate was measured for various initial concentrations of reactants....
For the reaction A+B+C→D+E, the initial reaction rate was measured for various initial concentrations of reactants. The following data were collected: Trial [A] (M) [B] (M) [C] (M) Initial rate (M/s) 1 0.30 0.30 0.30 9.0×10−5 2 0.30 0.30 0.90 2.7×10−4 3 0.60 0.30 0.30 3.6×10−4 4 0.60 0.60 0.30 3.6×10−4
For the reaction A+B+C→D+E, the initial reaction rate was measured for various initial concentrations of reactants....
For the reaction A+B+C→D+E, the initial reaction rate was measured for various initial concentrations of reactants. The following data were collected: Trial [A] (M) [B] (M) [C] (M) Initial Rate (M/s) 1 0.10 0.10 0.10 3.0×10−5 2 0.10 0.10 0.30 9.0×10−5 3 0.20 0.10 0.10 1.2×10−4 4 0.20 0.20 0.10 1.2×10−4 Part A What is the reaction order with respect to A? Part B What is the reaction order with respect to B? Part C What is the reaction order...
A Cu/Cu2+ concentration cell has a voltage of 0.23 V at 25 C. The concentration of...
A Cu/Cu2+ concentration cell has a voltage of 0.23 V at 25 C. The concentration of Cu2+ in one of the half-cells is 1.5×10-3 M. What is the concentration of Cu2+ in the other half-cell? (Assume the concentration in the unknown cell to be the lower of the two concentrations.) Express your answer using two significant figures.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT