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This question paper must be returned. Candidates are not permitted to remove any part of it from the examination room. SEAT NUMBER: _____________ ROOM: _________ FAMILY NAME ______________________________ OTHER NAMES ______________________________ STUDENT NUMBER __________________________ END-OF-YEAR EXAMINATIONS 2012 Unit Code/Name: CBMS208 Chemical Analysis I Time Allowed: 3 h o u r s p l u s 1 0 m i n u t e s r e a d i n g t i m e Total Number of Questions: Five (5) Instructions: Answer all questions. M a r k s f o r e a c h q u e s t i o n a r e a s f o l l o w s : Question 1: 40 marks ______________ Question 2: 35 marks ______________ Question 3: 25 marks ______________ Question 4: 35 marks ______________ Question 5: 45 marks ______________ Total mark for this paper: 180 (37 pages in total). Write your answers within the spaces provided in this examination paper. No other answer booklet will be provided. Materials permitted: Non-programmable calculators (no text retrieval capacity) permitted. No dictionaries permitted. Statistical tables are provided. Some useful information and formulae are listed on page 2, and a copy of the Periodic Table is attached on page 3 of this examination paper. SOME USEFUL INFORMATION AND FORMULAE
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Page 2 of 37 x r t s n pH pK a ± log A ² > @ HA >@ SD 2 n 1 ² 1 ³´ SD 1 2 ± n 2 ² 1 ³ ´ SD 2 2 n 1 ± n 2 ² 2 ³´ K w = K a • K b = 10 -14 t x 1 ² x 2 SD 1 n 1 ± 1 n 2 or t x 1 ² x 2 SD 1 2 n 1 ± SD 2 2 n 2 N l R A l I VA / C d.f.= SD 1 2 n 1 + SD 2 2 n 2 § © ¨ ¨ · ¹ ¸ ¸ 2 SD 1 2 n 1 ³´ 2 n 1 +1 + SD 2 2 n 2 ³´ 2 n 2 +1 ­ ® ° ° ° ¯ ° ° ° ½ ¾ ° ° ° ¿ ° ° ° -2 / z i F P ± ±P ² ³ ´ where F = 96,485 C mol -1 LSD= t 2 u within laboratory mean square Equal replicates in each laboratory E constant rE 0.05916 n log 10 A A ± k A,I A I ³´ I ¦ ª ¬ « « º ¼ » » Universal gas constant: R = 8.314 J mol -1 K -1 = 0.0821 atm L mol -1 K -1 N L H 16 t R w b § © ¨ ¨ · ¹ ¸ ¸ 2 5.54 t R w 1/2 § © ¨ ¨ · ¹ ¸ ¸ 2 2 / 1 / 693 . 0 max 1 1 S S V e D ² ² k ' t R ² t M t M t R ' t M C x Area x Area is u C is Rf x ' D t R B ' t R A ' t R B ² t M t R A ² t M Rf x ' Area x Area is u C is C x R N 4 1 D § © ¨ ¨ · ¹ ¸ ¸ k B ' 1 ± k B ' § © ¨ ¨ · ¹ ¸ ¸ C x Area x Area std u C std H A ± B u ± Cu D max C o C max 1 D R max ± 1 D S max 1
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This question paper must be returned. Candidates are not permitted to remove any part of it from the examination room. SEAT NUMBER: _____________ ROOM: _________ FAMILY NAME ______________________________ OTHER NAMES ______________________________ STUDENT NUMBER __________________________ END-OF-YEAR EXAMINATIONS 2013 Unit Code/Name: C B M S 2 0 8 C h e m i c a l A n a l y s i s I Time Allowed: 3 h o u r s p l u s 1 0 m i n u t e s r e a d i n g t i m e Total Number of Questions: Five (5) Instructions: Answer all questions. M a r k s f o r e a c h q u e s t i o n a r e a s f o l l o w s : Q u e s t i o n 1 : 4 5 m a r k s _ _ _ _ _ _ _ _ _ _ _ _ _ _ Q u e s t i o n 2 : 3 5 m a r k s _ _ _ _ _ _ _ _ _ _ _ _ _ _ Q u e s t i o n 3 : 2 5 m a r k s _ _ _ _ _ _ _ _ _ _ _ _ _ _ Q u e s t i o n 4 : 3 0 m a r k s _ _ _ _ _ _ _ _ _ _ _ _ _ _ Q u e s t i o n 5 : 4 5 m a r k s _ _ _ _ _ _ _ _ _ _ _ _ _ _ T o t a l m a r k f o r t h i s p a p e r : 1 8 0 ( 3 9 p a g e s i n t o t a l ). Write your answers within the spaces provided in this examination paper. No other answer booklet will be provided. Materials permitted: Non-programmable calculators (no text retrieval capacity) permitted. N o d i c t i o n a r i e s p e r m i t t e d . Some useful information and formulae are listed on page 2, a t -table is presented on page 3 and a copy of the Periodic Table is attached on page 4 of this examination paper.
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Page 2 of 39 SOME USEFUL INFORMATION AND FORMULAE x ± t s n pH = pK a + log A [ ] HA [] K w = K a • K b = 10 -14 κ = l R A = l I V A = Λ C Λ = z i F μ + ( ) where F = 96,485 C mol -1 E = constant ± β 0.05916 n log 10 A A + k A,I A I () I Universal gas constant: R = 8.314 J mol -1 K -1 = 0.0821 atm L mol -1 K -1 N = L H = 16 t R w b 2 = 5.54 t R w 1/2 2 2/1 / 693 . 0 max 1 1 SS V e D = k ' = t R t M t M = t R ' t M C x = Area x Area is × C is Rf x ' α = t R B ' t R A ' = t R B t M t R A t M Rf x ' = Area x Area is × C is C x R = N 4 α− 1 α k B ' 1 + k B ' C x = Area x Area std × C std H = A + B u + Cu D max = C o C max 1 D R max + 1 D S max = 1 Page 2 of 39 SOME USEFUL INFORMATION AND FORMULAE x ± t s n pH = pK a + log A [ ] HA [] K w = K a • K b = 10 -14 κ = l R A = l I V A = Λ C Λ = z i F μ + ( ) where F = 96,485 C mol -1 E = constant ± β 0.05916 n log 10 A A + k A,I A I () I Universal gas constant: R = 8.314 J mol -1 K -1 = 0.0821 atm L mol -1 K -1 N = L H = 16 t R w b 2 = 5.54 t R w 1/2 2 2/1 / 693 . 0 max 1 1 SS V e D = k ' = t R t M t M = t R ' t M C x = Area x Area is × C is Rf x ' α = t R B ' t R A ' = t R B t M t R A t M Rf x ' = Area x Area is × C is C x R = N 4 α− 1 α k B ' 1 + k B ' C x = Area x Area std × C std H = A + B u + Cu D max = C o C max 1 D R max + 1 D S max = 1
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SEAT NUMBER: ……….… ROOM: .………………. FAMILY NAME .…………. ....………………………. ... OTHER NAMES…………….…………………. .……. . STUDENT NUMBER………….………. .……………. . This question paper must be returned. Candidates are not permitted to remove any part of it from the examination room. x C a n d i d a t e s a r e r e q u i r e d t o o b e y a l l i n s t r u c t i o n s p r o v i d e d b y the Final Examination Supervisor and must refrain from communicating in any way with another student once they have entered the final examination venue. x C a n d i d a t e s m a y n o t w r i t e o r m a rk the exam materials in any way during reading time. x C a n d i d a t e s m a y o n l y a c c e s s a u t h o r i s e d m a t e r i a l s d u r i n g t h i s e xamination. A list of authorised material is available on this cover sheet. If it is alleged you have breached these rules at any time during the examination, the matter may be reported to the University Discipline Committee for determination. SESSION 2 FORMAL EXAMINATIONS – NOVEMBER/DECEMBER 2014 EXAMINATION DETAILS: Unit Code: CBMS208 Unit Name: Chemical Analysis I Duration of exam (incl. reading time if applicable) : Three (3) hours plus 10 minutes reading time Total no. of questions: Five (5) Total no. of pages (incl. this cover sheet) : Thirty-seven (37) INSTRUCTIONS: Answer all questions. Total marks for this paper are 180. Marks for each question are indicated. Write your answers in the space provided on this paper. The two blank pages at the end of the paper are for workings and rough notes only. Question Marks 1 /45 2 /35 3 /25 4 /30 5 /45 Total /180 MATERIALS PERMITTED/NOT PERMITTED: Dictionaries: No dictionaries permitted Calculators: Non-programmable calculators that do not have text retrieval capacity permitted Other: Closed book - no notes or textbooks permitted. A set of statistical tables is provided.
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Page 2 of 37 SOME USEFUL INFORMATION AND FORMULAE N l R A l I V A / C / z i F P ± ±P ² ³´ where F = 96,485 C mol -1 E constant rE 0.05916 n log 10 A A ± k A,I A I ³´ I ¦ ª ¬ « « º ¼ » » Universal gas constant: R = 8.314 J mol -1 K -1 = 0.0821 atm L mol -1 K -1 N L H 16 t R w b § © ¨ ¨ · ¹ ¸ ¸ 2 5.54 t R w 1/2 § © ¨ ¨ · ¹ ¸ ¸ 2 2 / 1 / 693 . 0 max 1 1 S S V e D ² ² k ' t R ² t M t M t R ' t M C x Area x Area is u C is Rf x ' D t R B ' t R A ' t R B ² t M t R A ² t M Rf x ' Area x Area is u C is C x R 4 1 D § © ¨ ¨ · ¹ ¸ ¸ k B ' 1 ± k B ' § © ¨ ¨ · ¹ ¸ ¸ C x Area x Area std u C std H A ± B u ± Cu D max C o C max 1 D R max ± 1 D S max 1
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