3) SO₂ и HCl
SO₂ + MgO = MgSO₃
2HCl + MgO = MgCl₂ + H₂O
C6H5-CH2-CH3+NH4Cl=C6H6+CH3-CH2Cl+NH3
n(С) : n(H) :n(Cl)=37,2/12 : 7,8/1 : 54,9/35,5
2 : 5 : 1
ответ: С2H5Cl
M(C2H5Cl)=64Г/МОЛЬ;
10.28g xmol x²mol x³mol
Zn3P2+6HCl=2PH3↑+3ZnCl2
258.5g 6mol 2mol 3mol
x=10.28·6/258.5=0.24mol
x²=10.28·2/258.5=0.08mol
x³=10.28·3/258.5=1.12mol
mZn=409.5·0.12=≈16.4g
VPH3=0.08·22.4=≈1.8L