1. 2c3h6 + 3o2 = 6co2 + 6h2o
5
2. Не указан окислитель.Например, с KMnO4 реакция выглядит так:
5 С6Н5СН3 + 6 KMnO4 + 9 H2SO4 = 5 С6Н5СООН + 2 K2SO4 + 6 MnSO4 + 14 H2O
3. c2h2 -> 2co2
V(co2)=2*0.5*22.4=22.4 l
4. c3h4br4
360
5. 2c2h2 + 5o2 = 4co2 + 2h2o
V(O2)=5/2 V(C2H2)=30 m3
6.
c2h2 + h2 = c2h4
0.4 m3 этена
7.
c2h2 + 2cl2 = c2h2cl4
m(cl2)=2*0.1*35.5=7.1 g
8.
x=5 y=10
пентен / циклопентан
9.
M(CnH2n-2)=4*10=40
14n-2=40
n=3
пропин
10.
C3H4 + 4O2 = 3CO2 + 2H2O
V(O2)=4*V(C3H4)=40 m3
11.
CaC2 + 2H2O = Ca(OH)2 + C2H2
3C2H2 = C6H6
C6H6 + HNO3 = C6H5NO2 + H2O
13
12.
CaO + 3C = CaC2 + CO
CaC2 + 2 H2O = C2H2 + Ca(OH)2
3C2H2 = C6H6
C6H6 + Cl2 = C6H5Cl + HCl
19
дано
m(ppaNaCL) = 292.5 g
W(NaCL) = 10%
m(ppa AgNO3) = 136 g
W(AgNO3) = 25%
m(AgCL) - ?
NaCL+AgNO3-->AgCL+NaNO3
m(NaCL) = m(ppa NaCL) * W(NaCL) / 100% = 292.5 *10 / 100 = 29.25 g
m(AgNO3) = m(ppa AgNO3) * W(AgNO3) / 100% = 136 * 25 / 100 = 34 g
M(NaCL) = 58.5 g/mol
n(NaCL) = m(NaCL) / M(NaCL) = 29.25 / 58.5 = 0.5 mol
M(AgNO3) = 170 g/mol
n(AgNO3) = m(AgNO3) / M(AgNO3) = 34 / 170 = 0.2 mol
n(NaCL) > n(AgNO3)
n(AgNO3) = n(AgCL) = 0.2 mol
M(AgCL) = 143,5 g/mol
m(AgCL) = n(AgCL) * M(AgCL) = 0.2*143.5 = 28.7 g
ответ 28.7 гр
Объяснение: