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a fost răspuns

ce masa de fier reactioneaza cu 100g solutie de comcentratie 36,5

Răspuns :

Fe + 2HCl = FeCl2 + H2
c=md/ms*100
36.5=md/100*100
md=36.5 g HCl
n=m/M
MHCl=1+35.5=36.5
n=36.5/36.5=1 mol HCl
1 mol Fe ......2 moli HCl
x .....................1 mol HCl
x=1*1/2=0.5 moli Fe
m=n*MFe=0.5*56
mFe=28 g Fe