80/100*325=260g Zn pur
n=m/M=260/65=4 moli Zn pur
Zn + 2HCl => ZnCl2 + H2
1 mol Zn......................2*36,5g HCl
4 moli Zn........................x=292g HCl
C=md/ms*100=>ms=md*100/C=29200/18,25=1600g HCl
ro=ms/V => V=ms/ro=1600/1,194=1340,033 cm3 = 1,34L sol. HCl