Bài 10 :
\(m_{ct}=\dfrac{20.360}{100}=72\left(g\right)\)
\(n_{CuSO4}=\dfrac{72}{160}=0,45\left(mol\right)\)
Pt : \(Fe+CuSO_4\rightarrow FeSO_4+Cu|\)
1 1 1 1
0,45 0,45 0,45 0,45
a) \(n_{Fe}=\dfrac{0,45.1}{1}=0,45\left(mol\right)\)
⇒ \(m_{Fe}=0,45.56=25,2\left(g\right)\)
b) \(n_{FeSO4}=\dfrac{0,45.1}{1}=0,45\left(mol\right)\)
⇒ \(m_{FeSO4}=0,45.152=68,4\left(g\right)\)
\(m_{ddspu}=25,2+360-\left(0,45.64\right)=356,4\left(g\right)\)
\(C_{FeSO4}=\dfrac{68,4.100}{356,4}=19,19\)0/0
Chúc bạn học tốt