Carry out the transformation of the chain: CH4 → C2H2; С2H5OH → C2H5Br → C2H4

1) 2CH4 → C2H2 + 3H2 (the reaction takes place at a temperature of about 1500 degrees Celsius)
2) С2H5OH + HBr → C2H5Br + H2O
3) C2H5Br + NaOH (alcohol) → C2H4 + NaBr + H2O



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