3
Ethene burns in an excess of oxygen to form carbon dioxide and water.
The equation for the reaction is
C₂H4 & 30₂
2002 + 2H2O.
The relative molecular mass of ethene is 28 and the relative molecular mass of water is 18.
(A: 0, 16; C, 12]
(a) (1) Calculate the relative molecular mass of carbon dioxide.
...[1]
(ii) Complete the following sentences.
28 g of ethene produces ........
..g of carbon dioxide and ..
g of water.
[3]
0.7g of ethene produces ..............g of carbon dioxide.
(b) Complete the diagram to show the bonds in a molecule of ethene.
H
H
C C
H
H