Exam Chem Lab2008 - T HE UNIVERSITY OF NEW SOUTH WALES...

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THE UNIVERSITY OF NEW SOUTH WALES NOVEMBER, 2008 CEIC2003 Chemical Engineering Laboratory I CEIC2012 Instrumental Analysis - Practical TIME ALLOWED: 2 hours TOTAL NUMBER OF QUESTIONS: 8 ALL QUESTIONS ARE OF EQUAL VALUE. ANSWER QUESTIONS 1-5 IN A SEPARATE BOOK. ANSWER QUESTIONS 6-7 IN A SEPARATE BOOK. ANSWER QUESTION 8 IN A SEPARATE BOOK. THIS PAPER MAY BE RETAINED BY THE CANDIDATE. ALL ANSWERS MUST BE WRITTEN IN INK. EXCEPT WHERE THEY ARE EXPRESSLY REQUIRED, PENCILS MAY BE USED ONLY FOR DRAWING, SKETCHING AND GRAPHICAL WORK. Please see over
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Question 1 (a) Differentiate between random and systematic error in a chemical analysis. Outline two methods to detect systematic error. (b) Discuss how the size ofthe confidence interval for a mean is affected by the sample size (N) and standard deviation (s). Question 2 (a) Describe the differences between single-beam and double-beam DV-Visible spectrophotometers and list two advantages possessed by one over the other. (b) Explain how you would experimentally quantify two analytes in a mixture, using a
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This note was uploaded on 04/20/2010 for the course CEIC 2003 taught by Professor Alice during the Three '10 term at University of New South Wales.

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Exam Chem Lab2008 - T HE UNIVERSITY OF NEW SOUTH WALES...

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