1)C+2H2=CH4
CH4+Cl2=CH3Cl+HCl
2CH3Cl+2Na=C2H6+2NaCl
C2H6+Cl2=C2H5Cl+HCl
2C2H5Cl+2Na=C4H10+2NaCl
2)C3H8+Cl2=C3H7Cl+HCl
2C3H7Cl+2Na=C6H14+2NaCl
C6H14+Br2=C6H13Br+HBr
C6H13Br+Br2=C6H12Br2+HBr.
1)C+2H2=CH4
CH4+Cl2=CH3Cl+HCl
2CH3Cl+2Na=C2H6+2NaCl
C2H6+Cl2=C2H5Cl+HCl
2C2H5Cl+2Na=C4H10+2NaCl
2)C3H8+Cl2=C3H7Cl+HCl
2C3H7Cl+2Na=C6H14+2NaCl
C6H14+Br2=C6H13Br+HBr
C6H13Br+Br2=C6H12Br2+HBr.