Page 15 - 2- WEKI Center - الايزو جزء الشرح

14.3 g Na2CO3.XH2O ()
at STP CO2
. 1.12 L

[ Na = 23 , C = 12 , O = 16 , H = 1 ]

‫ﺍﻟﺤــﻞ‬

Na2CO3 + 2HCl 2NaCl + H2O + CO2

1 mol 1 mol

( 2 X 23 ) + 12 + ( 3 X 16 ) 1 X 22.4

106 g 22.4 L

X g 1.12 L

 X = 106 X 1.12 = 5.3 g

22.4

5.3 g = Na2CO3 

9 g = 5.3 – 14.3 = –

Na2CO3 ‫ ﻣ‬5.3 g H2O 9 g

Na2CO3 ‫ ﻣ‬106 g H2O X g

 X = 9 X 106 = 180 g

5.3

18 g/mol = 16 + ( 2 X 1 ) = H2O

10 mol = 180 =

18

١١١  

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