N(C6H5COOH)=36.6г/122г/моль=0.3моль
Mr(CnH2n-6)=31.8г/0.3моль=106г/моль
12n+2n-6=106
14n=106+6
n=112/14
n=8
C8H10-это этилбензол-C6H5C2H5
10C6H5C2H5+14KMnO4+21H2SO4=10C6H5COOH+10CO2+14MnSO4+7K2SO4+16H2O
1)4MnO+3O2->2Mn2O3
2)BaCO3->BaO+CO2
3)CuO+H2SO4->CuSO4+H2O
4)N2+3H2->2NH3
5)2H2S+O2->2S+2H2O
6)2All+6HCl->2AlCl3+3H2
7)HNO3->H2O+No2+O2?
8)2NaOH+Cu(NO3)2->Cu(OH)2+2NaNO3
1) 2Fe+3Cl₂--->2FeCl₃
FeCl₃+3NaOH--->Fe(OH)₃+3NaOH
2Fe(OH)₃-->Fe₂O₃+3H₂O
Fe₂O₃+3H₂SO₄-->Fe₂(SO₄)₃+3H₂O
Fe₂(SO₄)₃+2Al-->Al₂(SO₄)₃+2Fe
2) Cl₂+H₂-->2HCl
Fe₂O₃+6HCl-->2FeCl₃+3H₂O
FeCl₃+3NaOH-->Fe(OH)₃+3NaCl
2Fe(OH)₃-->Fe₂O₃+3H₂O
Fe₂O₃+3H₂SO₄-->Fe₂(SO₄)₃+3H₂O
3) 2K+Br₂-->2KBr
KBr+AgNO₃-->AgBr+KNO₃
AgBr-->Ag+Br
Ag+2HNO₃-->AgNO₃+NO₂+H₂O
4NO₂+2H₂O+O₂-->4HNO₃
н-бутан изомеризуется в изобутан:
CH3-CH2-CH2-CH3 --> (CH3)3CH