Explain how ethene is produced using the apparatus in Figure 4. This is a three mark question.

- when the decane is heated it vaporises/turns to a gas

- decane vapour/gas breaks down as it comes into contact with hot porous pot

- large molecules of decane produce smaller molecules, including ethene

> b takes place in the gas phase in an isothermal tubular reactor. the feed is one mole of a per one mole of c, an inert. the entering temperature and pressure are 427°c and 10 atm, respectively. the gas constant r = 0.08206 atm · l/mol · k.