a) Gọi \(\left\{{}\begin{matrix}n_{Fe_2O_3}=a\left(mol\right)\\n_{CuO}=b\left(mol\right)\end{matrix}\right.\left(ĐK:a,b>0\right)\)
=> 160a + 80b = 4 (1); \(n_{HCl}=0,13.1=0,13\left(mol\right)\)
PTHH: Fe2O3 + 6HCl ---> 2FeCl3 + 3H2O
a-------->6a-------->2a
CuO + 2HCl ---> CuCl2 + H2O
b------>2b-------->b
b) nHCl = 6a + 2b = 0,13 (2)
Từ (1), (2) => a = 0,015; b = 0,02
=> \(\dfrac{n_{FeCl_3}}{n_{CuCl_2}}=\dfrac{2.0,015}{0,02}=\dfrac{3}{2}\)
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