Răspuns:
Explicație:
12,044.10²³ N2
react. cu 8moli H2
subst. in exces=?
Vgaz =?
- se afla nr. de moli N2
n= 12,044.10²³ : 6,022.10²³ = 2moli N2
xmoli 2moli zmoli
3H2 + N2 = 2NH3
3moli 1mol 2moli
-se afla subst. in exces
x= 3.2= 6moli H2
Deci H2 este in exces----> 8moli - 6moli = 2moli H2 in exces
m=n.M
m= 2 moli . 2g/moli = 4g H
1mol H2-------------6,022.10 ²³molecule H2
2moli-----------------------y
y= 2 . 6,022.10²³ = 12,044.10²³ molecule H2
-se afla moli, g , L de NH3
Z=2 . 2 = 4moli NH3
m= n. M
MNH3=14 + 3 = 17 ----> 17g/moli
m= 4moli .17g/moli= 68g NH3
VNH3 = 4moli . 22,4L/moli = 89,6 L