Question

1. Write : (a) molecular formula, (b) electron dot formula
and (c) structural formula of ethene (ethylene).
2. The molecules of alkene family are represented by a
general formula CnH2n. Answer the following:
(a) What do n and 2n signify ?
(b) What is the name of alkene when n = 4?
(c) What is the molecular formula of alkene when
n= 4?
(d) What is the molecular formula of the alkene if there
are ten H atoms in it ?
(e) What is the structural formula of the third member
of the alkene family?
(f) Write the molecular formula of lower and higher
homologous of an alkene which contains four carbon
atoms.
3. (a) Distinguish between the saturated hydrocarbon
ethane and the unsaturated hydrocarbon ethene by
drawing their structural formulae.
(b) Draw the structures of isomers of butene and write
their IUPAC names.
4. Give a balanced equation for the lab. preparation of
ethylene. How is the gas collected ?​

Answer 1

Answer:

question 1

(a)C2H4

(c)CH2=CH2