Which of the following factors affect the initial rate of a chemical reaction? T

Question

Which of the following factors affect the initial rate of a chemical reaction? The nature of the reactants. The concentration of the reactants. The size of the solid reactant particles. For the reaction aA + bB + cC Rightarrow dD + eE. the following data were obtained: A first-order chemical reaction is observed to have a rate constant of 5.48 Times 10-2 min-1 . How long take for three-fourths of the initial concentration to be consumed? The following mechanism has been suggested for the decomposition of N2O5. The rate law which is applicable to this mechanism is

Explanation / Answer

       The concentration, by value and order.

        Answer   d.

2.

-dc/dt = k[A]x[B]y[C]z

Find pairs of lines where only one reactant modifies its concentration. Look to ratios:

Rate1/rate2 = (conc1/conc2)x or y or z

From the 3rd and 4th lines: ratio is 3:1 for x=1

From the 4th and 6th lines: ratio is 1:4 for y=2

From the 5th and 6th lines: ratio is 1:1 for x=0

Answer a.

3

k = 5.48x10-2 min-1

It remains C =Co

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

---

---

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