For the reaction 4 A( g ) + 3 B( g ) 2 C( g ) the following data were obtained a

Question

For the reaction

4 A(g) + 3 B(g) 2 C(g)

the following data were obtained at constant temperature.

(a) What is the order with respect to each reactant?

(b) Select the rate law.

a. rate = k[A]2[B]rate = k[A] b. rate = k[A]3[B]1/2 c.rate = k[B]2 d.rate = k[A][B]2 e.rate = k[A]1/2[B]3

(c) Calculate k (using the data from Expt 1).
________L2/mol2·min

Experiment     Initial Rate     
(mol/L·min)     Initial [A]     
(mol/L)     Initial [B]     
(mol/L)     1     5.00   0.100     0.100     2     45.0     0.300     0.100     3     10.0     0.100     0.200     4     90.0     0.300     0.200    

Explanation / Answer

a) by doubling the concentration A   rate increases two times.

so with respect to A second order.

by doubling the concentration of B rate also doubled.

so with respect to B first order.

b) rate = k[A]2[B]

c) K = rate / [A]2[B]

K = 5.0 / (0.1)2 (0.1)

K = 5.0 x 103 L2/mol2·min

Related Questions

Navigate

• Browse (All)
• Browse F
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.