Make up the reaction equation with which you can carry out the following transformations: CaC₂⇒C₂H₂⇒СО₂⇒CаСО₃

1) .CaC2. + 2H2O. = C2H2. + Ca. (OH) 2 ..
2) .2C2H2. + 5O2. = 4CO2. + 2H2O ..
3) .CO2. + CaO. = CaCO3. or CO2. + Ca.OH) 2. = CaCO3. + H2O ..

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