Integrasi Sains-Islam: physical chemistry by RAVLI

24.1. Hitunglah kecepatan rata-rata (a) atom He (b) molekul CH4 pada (i)77 K (ii)298 K (iii)1000 K
Dik : Ar He = 4,003 g/mol
         Mr CH4 = 16 g/mol
Dit :
Jawab : a. atom He
   (i) 77 K
$\bar{c}=\left ( \frac{8RT}{\pi M} \right )^{1/2} = \left ( \frac{8X8,3145 JK^{-1}mol^{-1}X77K}{3,14X4,003 gmol^{-1}} \right )^{1/2} = \left ( \frac{5.121,424 Kgm^{2} s^{-2}}{12,569 X 10^{-3}Kg} \right )^{1/2} = \left ( 407,465X10^{3} m^{2}s^{-2} \right )^{1/2} = 638,330 ms^{-1}$
(ii) 298 K
$\bar{c}=\left ( \frac{8RT}{\pi M} \right )^{1/2} = \left ( \frac{8X8,3145 JK^{-1}mol^{-1}X298K}{3,14X4,003 gmol^{-1}} \right )^{1/2} = \left ( \frac{19.820,576 Kgm^{2} s^{-2}}{12,569 X 10^{-3}Kg} \right )^{1/2} = \left ( 1.576,941X10^{3} m^{2}s^{-2} \right )^{1/2} = 1.255,763 ms^{-1}$

          (iii) 1000 K
$\bar{c}=\left ( \frac{8RT}{\pi M} \right )^{1/2} = \left ( \frac{8X8,3145 JK^{-1}mol^{-1}X1000K}{3,14X4,003 gmol^{-1}} \right )^{1/2} = \left ( \frac{66.512 Kgm^{2} s^{-2}}{12,569 X 10^{-3}Kg} \right )^{1/2} = \left ( 5.291,750X10^{3} m^{2}s^{-2} \right )^{1/2} = 2.300,380 ms^{-1}$
           b. molekul CH4
(i) 77 K

$\bar{c}=\left ( \frac{8RT}{\pi M} \right )^{1/2} = \left ( \frac{8X8,3145 JK^{-1}mol^{-1}X77K}{3,14X16 gmol^{-1}} \right )^{1/2} = \left ( \frac{5.121,424 Kgm^{2} s^{-2}}{50,24 X 10^{-3}Kg} \right )^{1/2} = \left ( 101,939X10^{3} m^{2}s^{-2} \right )^{1/2} = 319,279 ms^{-1}$

          (ii) 298 K
$\bar{c}=\left ( \frac{8RT}{\pi M} \right )^{1/2} = \left ( \frac{8X8,3145 JK^{-1}mol^{-1}X298K}{3,14X16 gmol^{-1}} \right )^{1/2} = \left ( \frac{19.820,576 Kgm^{2} s^{-2}}{50,24 X 10^{-3}Kg} \right )^{1/2} = \left ( 394,518X10^{3} m^{2}s^{-2} \right )^{1/2} = 628,107 ms^{-1}$
          (iii) 1000 K
$\bar{c}=\left ( \frac{8RT}{\pi M} \right )^{1/2} = \left ( \frac{8X8,3145 JK^{-1}mol^{-1}X1000K}{3,14X16 gmol^{-1}} \right )^{1/2} = \left ( \frac{66.512 Kgm^{2} s^{-2}}{50,24 X 10^{-3}Kg} \right )^{1/2} = \left ( 1.323,885X10^{3} m^{2}s^{-2} \right )^{1/2} = 1.150,602 ms^{-1}$

Integrasi Sains-Islam

Sabtu, 23 Februari 2019

physical chemistry by RAVLI

Tidak ada komentar:

Posting Komentar

A Dreamer

Daftar Blog Saya

Benteng dan Senjata Mu'min