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Aim
Aim
To oxidise ethanol and use heating under reflux and distillation as practical techniques
To oxidise ethanol and use heating under reflux and distillation as practical techniques
A. Report & Analyse of Results
A. Report & Analyse of Results
Deduce the product formed in your experiment from:
analysing the results of the chemical tests carried out on the product
your procedure knowledge
Explain your reasoning using the outcomes of each test carried out.
Math that you will require
Math that you will require
Recognise and make use of appropriate units in calculations. ● Use ratios, fractions and percentages. ● Translate information between graphical, numerical and algebraic forms. ● Plot two variables from experimental or other data.
Learning Tip
Learning Tip
You should understand when distillation conditions and reflux conditions are used in the oxidation of alcohols.
You should be able to write equations for the oxidation of primary and secondary alcohols.
You should know that carboxylic acids are weak acids and that they show the typical reactions of acids. You should be able to write equations for these reactions.
B. Evaluate your report by answering the questions
B. Evaluate your report by answering the questions
1. Write an equation for the oxidation of ethanol to ethanoic acid. Use [O] to represent the oxidising agent.
2. Write an equation for the reaction of the distillate with magnesium.
3. Write an equation for the reaction of the distillate with calcium carbonate.
4. Explain the results of the tests involving acidified potassium dichromate and Fehling’s solution
C. Evaluate your Practical by Completing the Form - so you know where you should aim to make improvements in future
C. Evaluate your Practical by Completing the Form - so you know where you should aim to make improvements in future
Required Resources
Required Resources
Core Practical 5 Student Evaluation.docxAS-and-A-level-Chemistry-Core-Practical-5- Student Worksheets.docxConsult CLEAPSS Hazcards® 78C, 98A,40A,19B,59A. Perform a risk assessment using up-to-date information before this practical is carried ou
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