2CH3COOH + Mg=(CH3COO)2Mg + H2
CH3-COH +2 [Ag(NH3)2]OH -> CH3-COONH4 + 2Ag ↓+ 3NH3↑ + H2O
1 2
n(Ag) = 5,4/108=0,05моль;
n(CH3-COH)=0,05/2=0,025моль; m(CH3-COH)=0,025*44=1,1гр.
СH3-COOH + NaOH -> CH3-COONa + H2O
1 1
n(NaOH) = (10,26*1,3*0,3)/ 40=0,1моль;
n(CH3-COOH)=0,1моль; m(CH3-COOH)=0,1*60=6гр.
m(C2H5OH)=8-(1,1 + 6)=0,9гр.
W(CH3-COH)=1,1/8=0,1375(1375%);
W(C2H5OH)=0,9/8=0,1125(11,25%)
Na2SO4+BaCl2=2NaCl+BaSO4
Мицелла: {m[BaSO4]n Ba^{2+} * 2(n-x) Cl^{-}} ^{2x+} *2x Cl^{-} [/tex]
1) - <span>3) углерод → кремний → германий
2) - </span><span>4) алюминий → магний → натрий
3) - </span><span>4) кремния</span>