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Observation records (or other media) showing how you worked skilfully, accurately and safely whilst:
- preparing standard solutions
- carrying out titrations with hydrochloric acid and sodium hydroxide
- carrying out titrations with sodium hydroxide and dilute sulphuric acid
- determining concentrations of copper(II) sulfate using colorimetry
Criteria covered by this task:
| Unit/Criteria reference | To achieve the criteria you must show that you are able to: |
|---|---|
| AD.1 | Evaluate the accuracy of procedures and techniques used in titration and colorimetry in relation to outcomes and suggest improvements. |
| AM.1 | Demonstrate skillful application of procedures and techniques in titration and colorimetry to accurately determine the concentration of solutions. |
| AP.1 | Correctly prepare and standardise solutions for titration and colorimetry. |
| AP.2 | Investigate the concentration of unknown solutions, using procedures and techniques in titration and colorimetry. |
Sources of information to support you with this Assignment
- https://www.creative-chemistry.org.uk/alevel/practical.htm
- https://www.titrations.info/acid-base-titration
- http://www2.hkedcity.net/sch_files/a/scg-scy-sctwisitcor_cabinet/5524/N6lab_1-1.pdf
- http://mccscience.yolasite.com/resources/EXP%204.2.pdf
- http://www.rsc.org/learn-chemistry/resource/res00000697/titrating-sodium-hydroxide-with-hydrochloric-acid
- http://www.sparknotes.com/chemistry/acidsbases/titrations/section1.html
- http://www.chemguide.co.uk/physical/acidbaseeqia/phcurve5.html
- http://chm.libretexts.org/Textbook_Maps/Analytical_Chemistry_Textbook_Maps/Map%3A_Analytical_Chemistry_2.0_(Harvey)/02%3A_Basic_Tools_of_Analytical_Chemistry/2.5%3A_Preparing_Solutions
- https://www.sciencecompany.com/Preparing-Chemical-Solutions.aspx
- http://www.virtlab.com/main.aspx
- http://sciencing.com/use-colorimeter-5382170.html
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BTEC Internal Assessment QDAM December 2017
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