ShmoopTube

Where Monty Python meets your 10th grade teacher.

Search Thousands of Shmoop Videos


AP Chemistry Videos 54 videos

AP Chemistry 1.3 Chemical Reaction Rates
189 Views

AP Chemistry 1.3 Chemical Reaction Rates. What is the overall order of the reaction?

AP Chemistry 1.4 Chemical Reaction Rates
43 Views

AP Chemistry 1.4 Chemical Reaction Rates. What are the correct units for a second order rate constant?

AP Chemistry 1.5 Chemical Reaction Rates
42 Views

AP Chemistry 1.5 Chemical Reaction Rates. What is the rate law for the reaction?

See All

AP Chemistry 3.1 Chemical Reaction Rates 3 Views


Share It!


Description:

AP Chemistry 3.1 Chemical Reaction Rates. A graph of which of the following data will give a straight line graph for a first order reaction?

Language:
English Language

Transcript

00:03

Here’s your Shmoop du jour, brought to you by lines, helping scientists get dates since

00:08

1811. [Boy and girl looking at paintings]

00:09

Because what's dating without a little…chemistry?

00:12

Alright, here’s today’s question:

00:14

A graph of which of the following data will give a straight-line graph for a first order

00:18

reaction?

00:19

And here are your potential answers: All right, so we know that for a first order

00:25

reaction, the rate is proportional to the concentration of the reactant. [First order reaction equation]

00:29

That means that as the reaction proceeds, the concentration of the reactant decreases

00:33

more and more slowly.

00:35

To be a little more specific, the concentration of [A] decays exponentially.

00:40

Just like your concentration in the math class you have right before lunch. [Students in math class]

00:44

If your eyes are in proper working order, you can tell by looking at the graph that

00:47

this is not a straight line. [Graph with a sloping line]

00:49

If it looks like one to you, we highly recommend a quick visit to the optometrist. [Girl conducting an eye-exam]

00:52

Anyway, since this is a graph of the concentration of A versus time, we can eliminate A).

00:58

Options C) and D) could be right if the reaction orders were different.

01:01

But, unfortunately, teachers don’t give credit for potential correctness. [Answers C and D crossed out]

01:05

So that means that a graph of B would give you a straight line for a first order reaction.

01:10

For first-order reactions, the graph of the natural log of the concentration of the reactant

01:15

versus time will be a straight line.

01:18

So B will take you straight to the finish line. [B crossing the finish line on a running track]

01:21

We’d tell you another chemistry pick up line, but all the good ones argon. [Periodic table and Argon asks to call me]

Related Videos

AP Chemistry 1.3 Chemical Reaction Rates
189 Views

AP Chemistry 1.3 Chemical Reaction Rates. What is the overall order of the reaction?

AP Chemistry 1.4 Chemical Reaction Rates
43 Views

AP Chemistry 1.4 Chemical Reaction Rates. What are the correct units for a second order rate constant?

AP Chemistry 1.5 Chemical Reaction Rates
42 Views

AP Chemistry 1.5 Chemical Reaction Rates. What is the rate law for the reaction?

AP Chemistry 3.2 Laws of Thermodynamics
13 Views

AP Chemistry 3.2 Laws of Thermodynamics. What is the value for ΔG?