Other important addition reactions of alkenes
4 marks · NormalEthene can undergo different addition reactions.
Write the balanced chemical equation for the hydrogenation of ethene.
Name the product formed in this reaction.
Write the balanced chemical equation for the hydration of ethene (include state symbols for steam and ethanol).
State two conditions required for the hydration of ethene.
Work this out on paper, then compare with the answer and worked solution below. With a free account you can submit written answers for marking.
Show answer
(a)
(b) Ethane
(c)
(d) 300 °C and 60–70 atm (atmospheres) or phosphoric acid catalyst (any two)
Show mark scheme and worked solution
Marking points
A1 (a) · 1 mark · Correct balanced chemical equation for hydrogenation.
A2 (b) · 1 mark · Correct name of the product (ethane).
A3 (c) · 1 mark · Correct balanced equation for hydration, with state symbols.
A4 (d) · 1 mark · Any two correct conditions: 300 °C, 60–70 atm, phosphoric acid catalyst (any two for 1 mark).
Worked solution
a)
b) Ethane
c)
d) 300 °C and 60–70 atm; phosphoric acid catalyst is also a valid answer.