- Hydrolysis of metal carbides produces hydrocarbons depending on the type of carbide (methanide, acetylide, or allylide). - Methanides (containing C⁴⁻ ions) like Be₂C and Al₄C₃ produce methane (CH₄) upon hydrolysis. - Acetylides (containing C₂²⁻ ions) like CaC₂ and alkali metal carbides produce acetylene (C₂H₂) upon hydrolysis. - Carbides containing C₃⁴⁻ ions, like Mg₂C₃, produce propyne (methylacetylene, C₃H₄) upon hydrolysis.