Comment on each of the following observations.

(a) The carbides Mg₂C₃ and CaC₂ liberate propyne and ethyne respectively when treated with water, reaction between ThC₂ and water produces mixtures composed mainly of C₂H₂, C₂H₆ and H₂, but no reaction occurs when water is added to TiC.

(b) Mg₂Si reacts with [NH₄]Br in liquid NH₃ to give silane.

(c) Compound 14.43 is hydrolysed by aqueous alkali at the same rate as the corresponding Si—D compound.

Transcribed Image Text:

Me₂Si Me₂ Si - Sim Me H Si Me₂ (14.43)