2006 - T HE UNIVERSITY OF NEW SOUTH WALES EXAMINATION JUNE...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
THE UNIVERSITY OF NEW SOUTH WALES EXAMINATION JUNE 2006 CEIC2011 INSTRUMENTAL ANALYSIS THEORY TIME ALLOWED: 2 HOURS ANSWER ALL QUESTIONS TOT AL NUMBER = 8 ARE EQUAL VALUE CANDIDATES MAY BRING THEIR OWN DRAWING INSTRUMENTS OR RULES. FOLLOWING MATERIALS WILL BE PROVIDED BY ENROLMENT AND ASSESSMENT SECTION: CALCULATORS PRINT YOUR STUDENT ON TOP RIGHT HAND CORNER WORKBOOKS AND SHEETS. ST ATE ANY ASSUMPTIONS MADE TO QUESTIONS. ANSWERS MUST BE WRITTEN IN INK. EXCEPT WHERE THEY ARE EXPRESSLY REQUIRED, PENCILS MAY BE USED ONLY FOR DRAWING, SKETCHING GRAPHICAL WORK.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Question 1. A standard-addition method was employed for the polarographic determination ofzinc. Two 10 mls aliquotes ofthe unknown sample were analysed. To one aliquote 2ml of 1x 10- 2 M Zn 2 + was added. Both then received 10 ml of a tartrate solution that acts as a supporting electrolyte and buffer; finally, both were diluted to 25.00 ml and analysed. In the polarographic data given below concentration is proportional to the diffusion current. Calculate the weight in milligrams
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

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.

Page1 / 4

2006 - T HE UNIVERSITY OF NEW SOUTH WALES EXAMINATION JUNE...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online