(a) For a second-order reaction, what quantity, when graphed versus time, will y

Question

(a) For a second-order reaction, what quantity, when graphed versus time, will yield a straight line?

The concentration.The square of the concentration.     The inverse of the natural log of the concentration.The inverse of the concentration.The natural log of the concentration.

(b) How do the half-lives of first-order and second-order reactions differ?

The half-life of a first-order reaction depends on [A]0, whereas the half-life of a second-order reaction depends on 1 / [A]0.The half-life of a second-order reaction is independent of [A]0, whereas the half-life of a first-order reaction does depend on [A]0.     The half-life of a first-order reaction depends on 1 / [A]0, whereas the half-life of a second-order reaction depends on ln([A]0).The half-life of a first-order reaction is independent of [A]0, whereas the half-life of a second-order reaction does depend on [A]0.

Explanation / Answer

a)

second order reaction have the equaton

1/A = 1/A + kt

then a striagh line must have:

y-axis = 1/A

x-axis = time

choose

The inverse of the concentration

(b) How do the half-lives of first-order and second-order reactions differ?

the formula for

first order; depends only on "K"

t = ln(2)/k

second order; depends on "K" and A0

t = 1/(K*A0)

Related Questions

Navigate

• Browse (All)
• Browse #
• Subjects

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