linear graph

[josmit_1D]

for a second order reaction, what equation gives a linear plot?

[Samuel Tzeng 1B]

1/[A] vs time

[Hiba Alnajjar_2C]

You would get a linear plot when you graph 1/[A] vs. time. This makes a bit more sense when you look at the integrated rate law for a second order reaction: 1/[A]=kt+1/[A]o

(In this plot, k would be the slope).

[005162520]

how would we determine if it is a positive or negative slope? Or do we just have to memorize it ?

[Sofia Barker 2C]

how would we determine if it is a positive or negative slope? Or do we just have to memorize it ?

If given a set of [A] values vs time, you can determine the slope by taking the inverse of each [A] value, which gives the 1/[A] value, and see if it increases or decreases over time. That way you can see if the graph's slope will be positive (increasing values) or negative (decreasing values).

[Nathan Nakaguchi 1G]

A linear plot is in the form y=mx+b and for second order 1/[A] = kt + 1/[A]0 so the plot is 1/[A] versus time.

[ABombino_2J]

To see if the slope is positive or negative you take the value of k from the equation.

[Maika Ngoie 1B]

For a second order reaction the graph of ln[A] vs time will yield a straight line