\(\text{CuO + CO}\rightarrow\text{ Cu + CO2 }\)
x______x
\(\text{Fe2O3 + 3CO}\rightarrow\text{2Fe + 3CO2}\)
x_______3x
\(\text{m hh = 80x + 160x = 240x = 24g}\)
\(\rightarrow\text{ x = 0,1 mol}\)
\(\text{%CuO = 0,1.80÷24.100%= 33,3%}\)
\(\text{%Fe2O3 = 66,7%}\)
Gọi n CuO=x(mol)..Do tir lệ số mol là 1:1-->n Fe2O3=x (mol)
PTHH:CuO+CO--->Cu+CO2
-------------x--x
Fe2O3+3CO-->2Fe+3CO2
x-----------3x
n CO=8,96/22,4=0,4(mol)
Theo bài ta có
3x+x=0,4
-->4x=0,4
--->x=0,1
%m Cu=\(\frac{0,1.80}{24}.100\%=33,33\%\)
%m Fe2O3=100-33,33=66,67%