a)
PTHH: Fe+2HCl\(\rightarrow\)FeCl2+H2
b)
Ta có :
nH2=\(\frac{1,12}{22,4}\)=0,05(mol)
nFe=nH2=0,05(mol)
mFe=0,05.56=2,8(g)
%Fe=\(\frac{2.8}{33,6}.100\%\)=8,33%
%Cu=100-8,33=91,67%
c)
nHCl=2nH2=0,05.2=0,1(mol)
CMHCl=\(\frac{0,1}{0,1}\)=1(M)
a)
PTHH: Fe+2HCl→→FeCl2+H2
b)
Ta có :
nH2=1,1222,41,1222,4=0,05(mol)
nFe=nH2=0,05(mol)
mFe=0,05.56=2,8(g)
%Fe=2.833,6.100%2.833,6.100%=8,33%
%Cu=100-8,33=91,67%
c)
nHCl=2nH2=0,05.2=0,1(mol)
CMHCl=0,10,10,10,1=1(M)
Đúng 0
Bình luận (0)