100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Previously searched by you
Previously searched by you
logo
BTEC Applied Science - Unit 2 - Colorimetry Assignment (Achieved DISTINCTION) £7.49   Add to cart
Quickly navigate to
Preview
  2.  
  3. PEARSON (PEARSON)
  4.  
  5. Applied Science
  6.  
  7. Unit 2 - Colorimetry

Essay

BTEC Applied Science - Unit 2 - Colorimetry Assignment (Achieved DISTINCTION)
 10 views  0 purchase

Colorimetry assignment ● Achieved DISTINCTION ● Includes detailed evaluation ● Entire practical ~ method ~ aim ~ results ~ graphs ~ conclusion

Last document update: 7 months ago

Preview 1 out of 5  pages

Document information

  • January 14, 2024
  • April 18, 2024
  • 5
  • 2023/2024
  • Essay
  • Unknown
  • A+

Subjects

Written for

All documents for this subject (1)

Seller

avatar-seller
shahans2704

Reviews received

Content preview

Colorimetry

The aim of this practical is to prepare standard solutions by dilution, to calibrate the colorimeter
and then find the concentration of an unknown Cu 2+ solution.

To find the concentration of the unknown Cu 2+ solution, we began by switching on the colorimeter,
and ensured that the filter was set to 680nm (red filter). Six beakers were labelled as: 0.2 ; 0.4 ; 0.6 ;
0.8 ; 1.0. Using the table below as a guide, the Copper II solution and distilled water were both
measured using the pipettes.

Copper II concentration Volume of Copper Volume of distilled water
(moldm-3) (cm3) (cm3)
1.0 10.0 0.0
0.8 8.0 2.0
0.6 6.0 4.0
0.4 4.0 6.0
0.2 2.0 8.0
0.0 0.0 10.0


After filling the six beakers, the colorimeter was set to %Transmission. A cuvette was filled with 0.0
moldm-3 of the solution, while setting the %Transmission to 100%. The other cuvettes were also filled
with the other solutions and were placed into the colorimeter. The %Transmission was recorded for
each of the cuvettes. The 0.0 moldm-3 cuvette was regularly placed back into the colorimeter to
ensure that the %Transmission was still at 100%.

Then another cuvette was filled with the unknown solution - the absorbance and the %Transmission
were measured.

The experiment was repeated – this time, the filter was changed to the 590nm filter (orange filter).



Results:

Copper II 680nm RED Filter 590nm ORANGE Filter
Concentration Absorbance %Transmission Absorbance %Transmission
moldm-3
1.0 0.74 18 0.25 58
0.8 0.58 27 0.18 65
0.6 0.48 33 0.16 70
0.4 0.33 48 0.13 74
0.2 0.18 67 0.07 87
0.0 0.0 100 0.0 100




Unknown 680nm RED Filter 590nm ORANGE Filter

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

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

Quick and easy check-out

You can quickly pay through credit card for the summaries. There is no membership needed.

Focus on what matters

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 shahans2704. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for £7.49. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

66579 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy revision notes and other study material for 14 years now

Start selling
£7.49
  • (0)
  Add to cart