Răspuns:
Explicație:
c=3,4 %
4 moli KCl
ms AgNO3
masa precipitat
4moli xmoli ymoli
KCl + AgNO3= AgCl + KNO3
1mol 1mol 1mol
x = 4moli AgNO3
M= 108 + 14 + 3.16 = 170------> 170g/moli
m= 4moli . 170g/moli = 680g AgNO3 [ md ]
ms= md.100 : c
ms= 680 . 100 : 3,4 =20000 g sol. AgNO3
y= 4moli AgCl
M= 108 + 35,5= 143,5------> 143,5 g/moli
m= 4moli . 143,5g/moli=574g AgCl