Research and write up a Full Risk Assessment for your experiment. You will need to bring your Risk Assessment to your Core Practical 5 Laboratory session so that you can follow it.
1. Carry out research to develop a Risk Assessment. Ensure you make your precautions relevant to the correct chemicals and the concentrations and volumes being used. Hazcards 78C, 98A,40A,19B,59A. (It is recommended that you read the procedure on the next page first.)
CPAC 3a - Identifies hazards and assesses risks associated with these hazards, making safety adjustments as necessary, when carrying out experimental techniques and procedures
· Complete a full risk assessment prior to task
1. Include chemical hazards reactants & products plus physical hazards
2. Take account of volumes used to ensure risk assessment is appropriate
3. Take account of concentrations used to ensure risk assessment is appropriate
4. Make appropriate assessment of hazards and risks to do with the practical procedure itself
5. Reference hazcards used to plan for safety (CPAC 5b may be awarded if referenced)
CPAC 5a - Uses appropriate software and/or tools to process data, carry out research and report findings.
Carry out suitable research to support your risk assessment
Writes up a risk assessment in your own words specifying precautions relevant to practical being carried out
CPAC 5b - Sources of information are cited demonstrating that research has taken place, supporting planning and conclusions.
· Cite within text as necessary
· Reference Hazcards in a bibliography in such a way that the reader may retrieve the information easily
chemical-resistant gloves ● 20 cm3 acidified sodium dichromate solution ● anti-bumping granules ● two 50 ml pear-shaped (or round-bottomed) Quickfit® flasks ● Quickfit® condenser ● ethanol ● dropping pipette ● two 10 ml measuring cylinders ● bench acidified potassium dichromate (labelled acidified potassium dichromate for analysis) ● apparatus for distillation with thermometer going up to at least 110 °C ● calcium carbonate powder ● spatula ● magnesium ribbon ● beakers ● 4 test tubes ● universal indicator paper ● Fehling’s solution ● Bunsen burner ● ice-water bath
Research the boiling temperature range of reactants and products in order to achieve separation during distillation and collect the correct product. Demonstrate understanding by using citation to back up your ideas.
CPAC 5a - Uses appropriate software and/or tools to process data, carry out research and report findings.
· Use ICT to research temperature range of reactants and products
· Use researched data to select a temperature range to collect product over.
· Demonstrate understanding by using research to back up own work
CPAC 5b - Sources of information are cited demonstrating that research has taken place, supporting planning and conclusions.
· Cite within text as necessary
· Uses research to support choices of distillation temperature
· Reference sources in a bibliography in such a way that the reader may retrieve the information easily.
Consult CLEAPSS Hazcards® 78C, 98A,40A,19B,59A. Perform a risk assessment using up-to-date information before this practical is carried out