PTHH: Fe + CuSO4 → FeSO4 + Cu
Mol: x x x x
Theo ĐLBTKL,ta có: 56x+160x = 152x + 64x
⇔ 160x - 152x = 64x - 56x = m+16-m=16
⇔ 8x = 16
⇔ x=2
⇒ m=mFe = 56.2 = 112 (g)
Vậy m=112 g
\(Fe+CuSO_4 \to FeSO_4+Cu\\ n_{Fe}=a(mol)\\ n_{Cu}=a(mol)\\ m+16=64a\\ \to 1,6=64a-56a\\ a=0,2(mol)\\ m_{Fe}=0,2.56=11,2(g)\)