Bạn hook hỉu thì link đây:https://hoc24.vn/hoi-dap/tim-kiem?q=Cho+3,1+gam+photpho+(P)+t%C3%A1c+d%E1%BB%A5ng+v%E1%BB%9Bi+oxi+(O2)+t%E1%BA%A1o+ra+h%E1%BB%A3p+ch%E1%BA%A5t+%C4%91iphotpho+pentaoxit+(P2O5)+++1/+l%E1%BA%ADp+ph%C6%B0%C6%A1ng+tr%C3%ACnh+h%C3%B3a+h%E1%BB%8Dc++2/+t%C3%ADnh+th%E1%BB%83+t%C3%ADch+kh%C3%AD+oxi+c%E1%BA%A7n+d%C3%B9ng+%E1%BB%9F+%C4%91ktc+?++3/+t%C3%ADnh+kh%E1%BB%91i+l%C6%B0%E1%BB%A3ng+c%E1%BB%A7a+h%E1%BB%A3p+ch%E1%BA%A5t+thu+%C4%91%C6%B0%E1%BB%A3c+sau+ph%E1%BA%A3n+%E1%BB%A9ng&id=160835
1/4P+5O2------>2P2O5
2/nP=3,1/31=0,1(mol)
theo pt nO2=5/4nP=5/4.0,1=0,125(mol)
VO2=0,125.22,4=2,8(l)
3)mO2=0,125.32=4g
áp dụng đlbtkl,ta có:
mP+mO2=mP2O5
<=>3,1+4=mP2O5
=>mP2O5=7,1(g)
1/4P+5O2------>2P2O5
2/nP=3,1\31=0,1(mol)
theo pt nO2=5/4nP=5/4.0,1=0,125(mol)
VO2=0,125.22,4=2,8(l)
3)mO2=0,125.32=4g
áp dụng đlbtkl,ta có:
mP+mO2=mP2O5
<=>3,1+4=mP2O5
=>mP2O5=7,1(g)
d4.P+5O2-->2P2O5
.........0,1------0,04 mol
==>nO2=2,24\22,4=0,1 mol=>mP2O5=0,04.142=5,68 g