Write the reaction equation: C2H2 → CH3COH → C2H5OH → C2H2Br

Let’s carry out the solution of the chain of transformations:
С2Н2 + Н2О = Н2С = СН – ОН = Н3С – СНО – the reaction of acetylene hydration, occurs when heated, vinyl alcohol is released, which, being an unstable compound, undergoes isomerization, ethanal is formed;
Н3С – СНО + Н2 = Н3С – СН2 – ОН – reduction of ethanal with hydrogen, ethanol was obtained;
Н3С – СН2 – ОН + НBr = H3C – CH2 – Br + H2O – exchange, bromoethane is released.
The above equations show the relationship between alkynes, aldehydes and alcohols. Substances obtained in the course of reactions find practical application, for example, ethanol and bromoethane as solvents.