4P+5O2-->2P2O5
0,04--0,05 -----------0,2 mol
nP2O5=2,84\142 =0,02 mol
=>mP=0,04.31=1,24 g
=>VO2=0,05.22,4=1,12 g
\(4P+5O_2\rightarrow2P_2O_5\)
\(n_{P2O5}=\frac{2,84}{142}=0,02\left(mol\right)\)
\(n_P=2n_{P2O5}=2.0,02=0,04\left(mol\right)\Rightarrow m_P=0,04.31=1,24\left(g\right)\)
\(n_{O2}=\frac{5}{2}n_{P2O5}=\frac{5}{2}.0,02=0,05\left(mol\right)\)
\(\Rightarrow V_{O2}=0,05.22,4=1,12\left(l\right)\)
4P+5O2-->2P2O5
0,04--0,05 -----------0,2 mol
nP2O5=2,84\142 =0,02 mol
=>mP=0,04.31=1,24 g
=>VO2=0,05.22,4=1,12 l