Explain, in terms of structure and bonding, why carbon dioxide has a low boiling point and calcium carbide has a high boiling point.
Calcium carbide, CaC$_2$, reacts with water to produce ethyne, C$_2$H$_2$, and calcium hydroxide. Construct the equation for this reaction.
Ethyne is an unsaturated hydrocarbon. State the meaning of the term hydrocarbon.
Ethyne is part of the alkyne homologous series. The molecular formulae of the first four members of the alkyne homologous series are shown: C$_2$H$_2$ C$_3$H$_4$ C$_4$H$_6$ C$_5$H$_8$ Predict the formula for the fifth member of the alkyne homologous series.
What type of chemical reaction takes place when ethyne reacts with hydrogen?
Predict the molecular formula of a product formed when ethyne reacts with hydrogen.
When excess ethyne reacts with chlorine, 1,2-dichloroethene is formed. The structure of 1,2-dichloroethene is shown. Deduce the partial structure of the polymer of 1,2-dichloroethene. Show three repeat units.