Khamis, 2 Februari 2012

Q&A UPS II PDT kimi-'A'!


اَلسَّلاَمُ عَلَيْكُمْ وَرَحْمَةُ اللهِ وَبَرَكَاتُهُ

آللّهُمَ صَلّیۓِ ۈسَلّمْ عَلۓِ سَيّدنَآ مُحَمّدْ وَ عَلۓِ آلِ سَيّدنَآ مُحَمَّدٍ

forecast kimi-'A'! PDT utk esok khamis 2.2.12 9-10 am

Q1) PV=nRT cari Mr, mass dan density, partial pressure dalton's Law, compare ideal gas dan real gas

Q2) compare surface tension, compare amorphous dan crystalline solid. contoh sekali

Q3) ICE table kira Qc, Qp, Kc, Kp Kp=Kc(RT)n

Q4) Le Chatelier. predict direction. how to increase product

defination
1) boyle's law
2) Charles' Law
3) partial pressure dalton's Law
4) Boiling point
5) Le Chatelier

gud Luck sumer! buktikan kimi-'A'! itu M U D A H...! Insya Allah A


Jawapan UPS II PDT kimi-‘A’!

A1) a) V increase 10% = 28L     V2 = 280 + 28 = 308L

     P1V1 = P2V2    P2 = 2.28 atm
        T1            T2

b) i  Vapor pressure ------ refer notes
    ii  Hexane    reason : lower BP and weak IMF

c) P = nRT / V
       = 9.42 atm

A2) a) refer notes
       b) mol CO = 0.166
            PV = nRT
              Vco = 3.72L

           Density gas P = m/v
                                   = 2.9 gL-1

     c) i  refer notes
         ii  amorphous solid : glass
             molecular crystal : sulphur

A3) a) refer notes
       b) i   Qc = [product] / [reactant]
                      = 17.58
                 Qc > Kc   equilibrium shift left

          ii    Kp = Kc (RT)∆n
                      = 1.87 X 103

mol
    2SO2(g)     +     O2 (g)                 2SO3 (g)          
Initial
        2                      1                             0
Change
       -2x                  -x                           +2x
Equilibrium
     2-2x                 1-x                            2x
A4)     





Mol O2  dissociated = 0.61            Mol O2 at eqlb   =  0.39      Total mol = 2.39
Mol SO2  at eqlb =  0.78               Mol SO3  at eqlb =  1.22

% SOat eqlb = 1.22 / 2.39 x 100% = 51.05%

b) i   shift left      PCl3 decrease
    ii   shift left     PCl3 decrease

Pesanan : Sila wat pembetulan...!!! hantar kepada pensyarah tutor masing2 pada RABU 8 Feb 2012

silalah bertawakkal kepada Allah... redha dan sabar... selalulah berani bertanya soalan kimi-'A'! kepada pensyarah dan berfikir..>!! Insya Allah kimi-'A'! itu M U D A H-----------------> A!

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