## Slope From

$\frac{d[R]}{dt}=-k; [R]=-kt + [R]_{0}; t_{\frac{1}{2}}=\frac{[R]_{0}}{2k}$

Sarah Sharma 2J
Posts: 33
Joined: Fri Sep 29, 2017 7:05 am

### Slope From

Can someone please explain why it is important for us to know the slope-intercept form for some of the equations?

David Minasyan 1C
Posts: 54
Joined: Thu Jul 13, 2017 3:00 am

### Re: Slope From

As far as I know it just helps with identifying what the rate constant is.

Jingyi Li 2C
Posts: 56
Joined: Fri Sep 29, 2017 7:06 am

### Re: Slope From

For zero order,
y-intercept is initial concentration and slope is -k (rate constant)

For first order,
y-intercept is the natural logarithm of initial concentration and slope is -k

For second order,
y-intercept is the inverse of initial concentration and slope is k

Sophia Kim 1C
Posts: 51
Joined: Fri Sep 29, 2017 7:04 am
Been upvoted: 1 time

### Re: Slope From

The slope form is important in identifying the rate constant and also the order when given concentrations.

Sophie 1I
Posts: 51
Joined: Fri Sep 29, 2017 7:04 am

### Re: Slope From

Sandhya Rajkumar 1C
Posts: 50
Joined: Fri Jun 23, 2017 11:40 am

### Re: Slope From

By plotting the experimental data vs time, you would be able to identify the order of the reaction depending on whether [A] vs time, ln[A] vs time , or 1/[A] vs time gave you a straight line plot, where A is the reactant. Also, the slope would tell you what k is.