(a)(i) - sodalime does not attack glass apparatus, unlike caustic soda - sodalime is not, deliquescent unlike caustic soda.
(ii) - it is a gas at room temperature. - colourless gas. - odourless gas. - slightly soluble in water. -less dense than air.
(iii) I. %
Carbon Hydrogen 82.76 17.24
82.76 17.24 12 1.00
6.90 17.24 6.90 6.90
1 2.5
2 5
II. Emperical formula = C\(_2\)H\(_5\)
Molecular formula = C\(_2\)H\(_5\)n = VD x 2
[(12 x 2) + (1 x 5)]n = 58
29n = 58
n = 2
molecular formula = (C\(_2\)H\(_5\))\(_2\) = C\(_4\)H\(_{10}\)
(b) (i) Tha existence of two or more compounds with the same molecular formula but different molecular structures/different arrangement of atoms.
(iii) ethanol methoxymethane
(iv) The two isomers belong to different homologous series/they have different functional groups.
(c) - functional groups - number of atoms of different elements - types of elements - types of bonds - percentage composition of the elements in a compound - spatial arrangements of atoms in a molecule
(d) Pass each of the gases into (acidified) KMO\(_4\)/ bromine water/bromine inCCl\(_4\)/ bromine propene decolourizes bromine water/KMnO\(_4\)/bromine in CCI\(_4\)/bromine whereas propane does not.
