2KClO3---2.KCl +3O2(1)
5O2 +4P--->2P2O5(2)
Ta có
n\(_{KClO3}=\frac{24,5}{122,5}=0,2\left(mol\right)\)
Theo pthh1
n\(_{O2}=\frac{3}{2}n_{KClO3}=0,3\left(mol\right)\)
Theo pthh2
n\(_{P2O5}=\frac{2}{5}n_{O2}=0,12\left(mol\right)\)
m\(_{P2O5}=0,12.142=17,04\left(g\right)\)
Chúc bạn học tốt
Ta có : nKClO3 = 0,2(mol)
PTHH : P+ SO2---> P2O5
KClO3---> KCl+O2
=> nO2 = 0,3(mol)
=> nP2O5 = 0,12(mol)
=>mP2O5 = 0,12.142 = 17, 04(g)