Question

[NHAT KIM ANH]

Answer 1

[Buddy]

2Fe+6H2SO4−−>Fe2(SO4)3+6H2O+3SO2

x--------------------------------------------------------------1,5x(mol)

Cu+2H2SO4−−>CuSO4+H2O+SO2

y---------------------------------------------------y(mol)

nSO2=5,622,4=0,25(mol)

Theo bài ta có hpt

{56x+64y=121,5

x+y=0,25

⇒{x=0,1y=0,1

mFe=0,1.56=5,6(g)

mCu=0,1.64=6,4(g)

=>%Fe=46,67%

=>%Cu=53,33%

=>VH2SO4=\(\dfrac{0,5}{1}\)=0,5l=500ml