Question

which is a property of both alkenes and alkynes? both are highly water soluble. the ph of these hydrocarbons tends to be very basic. their boiling points tend to increase with chain length. their densities are all much higher than that of water.

Explanation:

Alkenes and alkynes are non - polar hydrocarbons. Non - polar substances are not highly water soluble. Hydrocarbons are neutral and do not have a basic pH. Their densities are generally lower than that of water. However, as the chain length of hydrocarbons (both alkenes and alkynes) increases, the intermolecular forces (London dispersion forces) increase, leading to an increase in boiling points.

Answer:

Their boiling points tend to increase with chain length.