Calculati ce masa de acid clorhidric se formeaza din reactia a 3,36 litri de Cl2 masurat la o presiune de 4 atmosfere si o temperatura de 127 de grade.
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Răspuns:
Explicație:
3,36 L Cl2
react. cu H2
p=4 atm
t=127 °C
m HCl
p. V = n . R. T
n= p . V : R . T
n= 4atm . 3,36 L : 0,082 L.atm / moli K . ( 127 + 273 )K
se simplif. unit. de masura
n= 4 . 3,36 : 0,082 moli . 400 = 0,41moli Cl2
0,41moli xmoli
H2 + Cl2 = 2 HCl
1mol 2moli
x= 0,41. 2= 0,82 moli HCl
m= n . M
M = 1 + 35,5=36,5----> 36,5g/moli
m= 0,82 moli . 36,5g/moli=29,93g HCl