3) SO₂ и HCl
SO₂ + MgO = MgSO₃
2HCl + MgO = MgCl₂ + H₂O
2CH3COOH + Zn = (CH3COO)2Zn + H2
2CH3COO(-) + 2H(+) + Zn = 2CH3COO(-) +Zn(2+) + H2
2H(+) + Zn = Zn(2+) + H2
2CH3COOH + Zn(OH)2 = (CH3COO)2Zn + 2H2O
2CH3COO(-) + 2H(+) +Zn(OH)2 = 2CH3COO(-) +Zn(2+) + 2H2O
2H(+) +Zn(OH)2 = Zn(2+) + 2H2O
2CH3COOH + ZnO = (CH3COO)2Zn + H2O
2CH3COO(-) + 2H(+) +ZnO = 2CH3COO(-) +Zn(2+) + H2O
2H(+) +ZnO = Zn(2+) + H2O
2CH3COOH + Na2CO3 = 2CH3COONa + H2O + CO2
2CH3COO(-) + 2H(+) +2Na(+) + CO3(2-) = 2CH3COO(-) + 2Na(+) + H2O + CO2
2H(+) + CO3(2-) = H2O + CO2
х г 12г
ch3oh + ch3cooh = ch3cooch3 + h2o
32 60
n(ch3oh)=1моль
M(ch3oh)=12+4+16=32г/моль
m(ch3oh)=n*M=1*32=32г
n(ch3cooh)=1моль
M(ch3cooh)=12*2 + 16*2 + 4=60г/моль
m(ch3cooh)=60г
составляем пропорцию
x/32=12/60
x=32*12/60=6.4
m(ch3oh)=6.4 г
Ответ: 6.4 г