Ethanol can be converted into ethene which can be changed into ethane. Choose the correct word or phrase from the brackets to complete the following sentences.

(a) The conversion of ethanol into ethene is an example of …………… (dehydration, dehydrogenation).

(b) Converting ethanol into ethene requires the use of …………… (conc. HCl, conc. HNO₃, conc. H₂SO₄).

(c) The conversion of ethene into ethane is an example of …………… (hydration, hydrogenation).

(d) The catalyst used in the conversion of ethene into ethane is commonly …………… (iron, nickel, cobalt).

Write the equations for the following lab. preparations:

(a) Ethane from sodium propionate.

(b) Ethene from iodoethane.

(c) Ethyne from calcium carbide.

(d) Methanol from iodomethane.

Write the equations for the following reactions:

(a) Calcium carbide and water.

(b) Ethene and water (steam).

(c) Bromoethane and an aqueous solution of sodium hydroxide.

What are carboxylic acids? Give their general formula