a)\(4P+5O2-->2P2O5\)
\(n_P=\frac{12,4}{31}=0,4\left(mol\right)\)
\(n_{O2}=\frac{5}{4}n_P=0,5\left(mol\right)\)
\(m_{O2}=0,5.32=16\left(g\right)\)
b)\(n_{P2O5}=\frac{1}{2}n_P=0,2\left(mol\right)\)
\(m_{P2O5}=0,2.142=28,4\left(g\right)\)
c)\(V_{O2}=0,5.22,4=11,2\left(l\right)\)
\(V_{kk}=5V_{O2}=11,2.5=56\left(l\right)\)
a) nP=12,4/31=0,4(mol)
PTHH : 4P + 5O2 --------> 2P2O5
theo pt : nP2O5 = 1/2nP= 0,2 (mol)
=> mP2O5= 0,2×142= 28,4(g)
b) theo pt nO2=5/4nP =0,5(mol)
=> VO2 = 0,5× 22,4=11,2(l)
=> Vkk= 5VO2= 5×11,2=56(l)
a) nP=12,4/31=0,4(mol)
PTHH : 4P + 5O2 --------> 2P2O5
theo pt : nP2O5 = 1/2nP= 0,2 (mol)
=> mP2O5= 0,2×142= 28,4(g)
b) theo pt nO2=5/4nP =0,5(mol)
=> VO2 = 0,5× 22,4=11,2(l)
=> Vkk= 5VO2= 5×11,2=56(l)