PTPU : \(4P+5O_2\rightarrow2P_2O_5\)
a.
\(n_{O_2}=\frac{11,2}{22,4}=0,5\left(mol\right)\)
\(\Rightarrow n_P=\frac{0,5.4}{5}=0,4\left(mol\right)\)
\(\Rightarrow m_P=0,4.31=12,4\left(g\right)\)
b.
\(n_{P_2O_5}=\frac{0,5.2}{5}=0,2\left(mol\right)\)
\(\Rightarrow m_{P_2O_5}=0,2.142=28,4\left(g\right)\)
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