225 кДж
СH4+2O2=CO2+2H2O+Q
n(CH4)=5.6/22.4=0.25 моль
0,25 моль- 225 кдж
1 моль - х кДж
х = 225/0,25=900 кДж
СH4+2O2=CO2+2H2O+900кДж
H₂SO₄+Zn=ZnSO₄+H₂↑
2H₂SO₄(конц.)+2Ag=Ag₂SO₄↓+2H₂O+SO₂↑
H₂SO₄+ Ba=BaSO₄+H₂↑
2H₂SO₄(конц.)+ Cu=CuSO₄+2H₂O+SO₂↑
H₂SO₄+ ZnO=ZnSO₄+H₂O
H₂SO₄+ CuO=CuSO₄+H₂O
H₂SO₄+ Cu(OH)₂=CuSO₄+2H₂O
H₂SO₄+ 2NaOH=Na₂SO₄+2H₂O
H₂SO₄+ BaCl₂=BaSO₄↓+2HCI
H₂SO₄+ Na₂CO₃=Na₂SO₄+H₂O+CO₂↑
H₂SO₄+ BaCl₂=BaSO₄↓+2HCI
В аммиаке (NH3)- ковалентная полярная связь.
C2H6-C2H4+H2
C2H4+H2O-C2H5OH
C2H5OH+HCl-C2H5Cl+H2O
2C2H5Cl+2Na-C4H10+2NaCl
C4H10+O2-2CH3COOH+H2
CH3COOH+NaOH-CH3COONa+H2O
CH3COONa+NaOH-CH4+Na2CO3
CH4+Cl2-CH3Cl+HCl
2CH3Cl+Na-C2H6+2NaCl
2C2H6+7O2-4CO2+6H2O
6CO2+6H2O-C6H12O6+6O2
C6H12O6-C2H5OH+2CO2
2C2H5OH+2O2-CH3COOH+2H2O
CH3COOH+C2H5OH-CH3COOC2H5