Ahad, 27 Mac 2011

Forecast Question FiNaL SK 027 Sem II 10 / 11

Paper II (2 ½ Hours)  M o n d a y  18 April 2011 (9.00 - 11.30 am)
Part A (40M) (answer ALL)

Chapter 1 : Thermo (10M)
1) a) i) Definition of enthalpy combustion / formation / atomization / Hess Law       
        ii) Give equation, calculate Enthalpy ∆H                                                  (5M)

b)          Construct Born Haber Cycle (BHC) e.g : KCl / Mg(OH)2
@ Label the Enthalpy ∆H                                                                   (5M)                       

Chapter 4 : Intro & General Organic (10M)
2) a)     Determine type of reaction e.g : EA, ES, NS, FRS etc                         (4M)
     b)    Define isomer                                                                                                    
                          Draw a pair of enantiomers    
             @ simple reaction: give isomer, reagent used, product etc       
                  Eg: nitration, Grignard reagent, Lucas test, [O] & [H] etc               (6M)

General Organic (10M)
3) a)  Arrange increasing / decreasing BP @ solubility: C-C, NH2, OH, C=O etc       (5M)
    b) Arrange increasing / decreasing of acidity / basicity e.g: Phenol, aniline, NH3       (5M)

General Organic (10M)
4) a)  reaction of amine i.e 10 –NH2 and 20 –NH2 , Class of OH or COOH derivative        (6M)
    b)  Write structure from simple diagram of reaction e.g: R-X, C6H6, OH, COOH or  
          NH2. Also give the name of product the test                                                                                (4M)

Part B (60M) (answer 4 (four) only Q from 6 Q)

Chapter 2 : Electro Chem (15M)
5) Q = It
    Calculate mass of metal formed / deposited at cathode electrode in unit gram,      
    molarity, time etc. (Faraday 1st Law: also consider defination)
    P/s- 1 mol e = 96500C=1F
    Galvanic cell
    Calculate an ion [ ] that involve in the reaction using Nernst equation                      (15M)

Chapter 3 : Reaction Kinetic (15M)
6) a) Determine the order of reaction and rate constant, k from the table given    (10M)
         half life 1st order
         * consider to plot graph and write DRE (differential rate of equation)
         * Interpret MBD graph.
    b) Explain the factors of collision theory                                                               (5M)

General Organic (15M)
7) a) draw structure and write equation also observation                                                              
          e.g: C=C, R-X, benzene, OH, C=O, COOH or NH2                                   (7M)

     b) Synthesis and write equation from R-X, benzene, OH, COOH or NH2           (8M)
          * consider observation and naming the product
          * show mechanism of the reaction

General Organic (15M) (explanation & show synthesis)
8) a)  draw structure and write equation & show mechanism of the reaction                                         
          C=O, OH, benzene or COOH à give the type of reaction involved                                                                        
     @ Give chemical test aniline & Phenol, OH & C=C, 10 –NH2 & 20 –NH2              (7M)

     b) Using Grignard Reagent R-Mg-X to produce 20 alcohol, C=O and COOH        (8M)

General Organic (15M)
9) a)  Chem test, observation, write equation. (Iodoform / Tollen test / fehling),
          Lucas test, Baeyer Test, Hinsberg Test, HNO2 test, Hoffman Degradation etc   (7M)
    b)  Synthesis e.g: i) C7H6O               vinyl benzene
                                ii) Benzene             phenyl acetic acid                                         
                              iii) Toluene               m-nitro benzoic acid @ σ-nitro benzoic acid  (8M)

Chapter 19, 20 & 21 : Amine, AA & Protein, Polymer (15M)
10) a)  Amine preparation & reaction (Hinsberg test @ HONO @ O=C-Cl)   
            Write structure & give reason                                                                            (7M)
      b)  zwitterions @ isoelectric point, draw structure e.g : peptide bond O=C-N        (4M)
      c)  polimer define i) homopolymer
                                   ii) copolymer
           *write monomer from repeating unit and vice versa
         - Condensation polymerization (nylon-6,6) @ polyester / polyamide
             * used of synthetic polimer eg dacron, nylon, kevlar etc                                      (4M)
                                                                           
             R e m i n d e r
 1)      4 chapter important in organic C=C, OH, C=O & COOH plus R-X, C6H6 & NH2
2)      Naming structure is not necessary but if write and wrong… no mark given…!!!
3)      Explain Boiling point step by step i.e explain for each compound..!!!
4)      Deduce, describe and explain answer include elaboration
5)      For questions that ask mechanismA R R O W is very….very important…!!!
6)      Synthesis / outline / convert only reagent & transition compound get mark!!

                                                               Important Summary
 1)      Synthesis (usually 2 or 3 steps only. Uncertain case 4 steps)
2)      Chemical @ differentiate test (3 marks given. Write equations properly…ok.)
3)      Arrange boiling point / solubility / acidity / basicity…. Must be explain. 4 marks

Warning : This is just forecast…ok my dear student.. please… please… I beg to you my dear student…. Go  s t u d ystudy smart… not study hard.
Good Luck ‘4’ your F I N A L….!! Insya 4W1

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