Other pages in this set

Page 2

Preview of page 2

Here's a taster:

Libby Southwell
10d1
Chemistry Coursework
Contents
Section 1: Brief Introduction
Section 2: Preliminary Investigation.
Section 3: Actual Investigation.…read more

Page 3

Preview of page 3

Here's a taster:

Libby Southwell
10d1
Chemistry Coursework
Section 1: Brief Introduction
We are carrying out an investigation to see whether the concentration affects the rate of
reaction. We will be looking at how the concentration of hydrochloric acid affects the rate of
which a Rennie tablet reacts to produce Carbon Dioxide and how this links to the collision
theory.
The Collision Theory
The collision theory says that a chemical reaction can only take place when molecules, atoms
or particles collide.…read more

Page 4

Preview of page 4

Here's a taster:

Libby Southwell
10d1
Chemistry Coursework
Section 2: Preliminary Investigation.
In our preliminary investigation, we decided to change the surface area of the tablet. We did
this by using a whole tablet, a tablet that had been broken in half and a powdered tablet.
First of all, we put 10ml of hydrochloric acid into a conical flask and added a Rennie tablet.…read more

Page 5

Preview of page 5

Here's a taster:

Libby Southwell
10d1
Chemistry Coursework
By the end of our experiment, we had this average results table
Time (Seconds) Whole Halved Powdered
0 0 0 0
20 20 20 15
40 35 36 17
60 50 53 30
80 65 60 30
100 75 70 30
120 85 75 32
140 95 80 32
160 100 83 32
180 102 85 32
200 103 85 33
220 106 86 33
240 107 86 33
In conclusion, we found that the increase in surface area affects…read more

Page 6

Preview of page 6

Here's a taster:

Libby Southwell
10d1
Chemistry Coursework
A Timer to measure the time for the reaction to take place and to make sure all our data
was recorded at the right intervals so our experiment is more accurate and is a fair test.
A conical flask for the reaction to take place in.…read more

Page 7

Preview of page 7

Here's a taster:

Libby Southwell
10d1
Chemistry Coursework
Hydrochloric acid (2M, 1M, 0.5M) to make the reaction happen
A Rennie tablet to react with the Hydrochloric acid.
When we had all of our equipment and set it all up, it looked like this with the Rennie tablet and
hydrochloric acid where the diagram is labelled reaction mixture.
Firstly, we put a Rennie tablet into 20ml of
0.5M hydrochloric acid in a conical flask.…read more

Page 8

Preview of page 8

Here's a taster:

Libby Southwell
10d1
Chemistry Coursework
produced by the reaction. We then times it for four minutes recording the gas produced every
twenty seconds to see how the rate of reaction changes within the four minutes. After the four
minutes, we then rinsed out the conical flask and performed the experiment another two times to
make sure it's a fair test and so we can work out an average for all three attempts.…read more

Page 9

Preview of page 9

Here's a taster:

Libby Southwell
10d1
Chemistry Coursework
60 100 100 100
80 100 100 100
100 100 100 100
120 100 100 100
We added them all together and divide by three and you got a mean of 16.3
Averages Table
Time (Seconds) 0.5M 1M 2M
0 0 0 0
20 16.3 34.6 72.6
40 26 39.3 103
60 34.3 77 100.3
80 39.3 91.6 11.3
100 43.3 100 100
120 49.…read more

Page 10

Preview of page 10

Here's a taster:

Libby Southwell
10d1
Chemistry Coursework
Section 4: Interpreting data strand
When we had plotted our graph we could see a big difference between each experiment.
The line which we plotted for the 2M rapidly and steeply went up with a positive correlation from
0-100 within 80 seconds. For the remainder of the four minutes, it plateaus out because the reaction
had stopped and had reached its peak of 120cm3 of carbon dioxide produced.…read more

Comments

No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »See all resources »