Unit 4 Assignment 1 ALL ANSWERS 100% CORRECT AID GRADE A+

Assignment title Quantitative and Qualitative analytical techniques Purpose of this assignment: To assess learners’ knowledge and understanding of AC. P1, M1, D1. Scenario You have started work in the analysis laboratory of large and diverse chemical manufacture, called Superchem. You will need to be trained in some of the basic techniques before you are allowed to do some of the non- routine analysis. You must keep accurate records of all your work. Task 1A Task 1A – Quantitative Analysis a) Use 0.1 M sodium hydroxide solution to determine the concentration of an unknown sample of Hydrochloric acid. Follow the method provided and complete the task sheet given. This provides evidence for [P1] Task 1B Task 1B – Qualitative Analysis Following the safety procedures, carry out an experiment to determine the presence of cations and anions in 6 samples provided. Report your results in the report sheet provided. This provides evidence for [P1] Task 2 a) Explain how accuracy was ensured when conducting the titration. b) Explain how accuracy was ensured when testing the inorganic samples. Note: you must provide at least 4 examples for each analysis. This provides evidence for [M1] Task 3 Evaluate the quantitative and qualitative analytical techniques used. You should be critical of the way you carried out the practicals, explaining the errors in the techniques and the consequences. Suggest any improvements for future investigations. This provides evidence for [D1] Evidence checklist [Summarise evidence required, e.g. ‘leaflet’, ‘presentation notes’ etc.] [tick boxes] Task 1: A task sheet X Task 2: A report X Task 3: A report X Sources of information [insert useful publications, websites, etc.] Books Foale S, Hocking S, Llewellyn R, Musa I, Patrick E, Rhodes P and Sorensen J – BTEC Level 3 in Applied Science Student Book (Pearson, 2010) ISBN 6800 Coyne G S – The Laboratory Companion: A Practical Guide to Materials, Equipment and Technique (John Wiley & Sons, 2005) ISBN 0861 Dean J R et al – Practical Skills in Chemistry (Prentice Hall, 2001) ISBN 0022 Dean J R et al – Practical Skills in Forensic Science (Prentice Hall, 2005) ISBN 4002