Write down the main methods for producing acetylene. write down the equations of the corresponding reactions.

1. Obtaining acetylene in industry:
2СН4 = С2Н2 + 3Н2 – the methane decomposition reaction is carried out at a temperature of 500 degrees on a coal catalyst;
Н3С – СН3 = 2Н2 + С2Н2 – ethane dehydrogenation;
H2C = CH2 = H2 + C2H2 – acetylene obtained by ethylene dehydrogenation;
2. Synthesis of acetylene in the laboratory:
CaC2 + 2H2O = Ca (OH) 2 + C2H2 – hydration of calcium carbide, gaseous acetylene is released.
The reaction product, acetylene, is of practical importance; acetylene gas is used in welding and cutting metals, as well as in the production of acetone.