Essay
Essay Unit 2 - Practical Scientific Procedures and Techniques
- Course
- Institution
Undertake calorimetry to understand cooling curves
[Show more]
Seller
Follow
charleymcclellan
Content preview
Stearic Acid cooling curve experimentCharley McClellan
Group L
Pass
This is a report in the analysis and evaluation of determining the rate of cooling of
Stearic Acid, written by Charley McClellan, a technical assistant at Chemcalequip.
Purpose
The aim of this experiment was to determine the patterns of cooling for 2 different
substances.
Hypothesis
I predict from the cooling curve that the temperature will rapidly decrease and then it
will reach a point of equilibrium and level out for a certain period due to changing
state from a liquid to a solid(freezing ) and then continue to drop steadily due to the
continual cooling and then will continue to decrease slowly when it is a solid.
Equipment used
● Clamp
● Thermometer
● Boiling tube
● Stearic acid
● Beaker
● Warm water
Method
1. Obtain a suitable quantity of stearic acid and place it into a boiling tube
2. Place the boiling tube into a beaker of freshly boiled water
3. Place a thermometer into the boiling tube
4. As the stearic acid heats up it will begin to melt
5. The record the highest temperature of the now liquid stearic acid
6. Remove the boiling tube from the beaker of hot water and allow to cool
7. Record the temperature overall a period of time at set intervals
8. Produce a graph
9. Analyse your results
Data table
The results that were accurately obtained from following the procedure in the
method above were carefully recorded on a table of results. The recordings were
accurate whereby the temperature of the stearic acid decreased per minute. This
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller charleymcclellan. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.24. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
72042 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now