2CH3COOH + P2O5 →(CH3CO)2O + 2HPO3
1)v (CH3COOH)=w*1/2 m/M=0,8*1/2 * 120/(24+32+4)=0,8*60/60=0,8моль
(CH3CO)2O + CH3CH2OH →CH3COOC2H5 + CH3COOH
2)v((CH3CO)2O)=v теор (CH3COOC2H5 )*w=0,8моль
v практ (CH3COOC2H5 )=w * v теор (CH3COOC2H5 )=0,8*0,8=0,64 моль
3) V(CH3COOC2H5 )=m/p=M*v/p=0,64*88/0,9=62,58 мл