7. Draw the structural formula for each of the following compounds:
(a) trans-2-hexene
(b) cis-2,3-dichloro-2-butene
(c) 1-methylcyclopentene
(d) trans-1,2-dibromocyclohexane
(e) 4-ethyl-1-octene
(f) 3-hexyne
(g) cis-diiodoethylene
(h)2-methyl-2-butene
(i)2-bromo-1,3-butadiene
8. Draw all the possible structural isomers of C5H1o. Give the
systematic name for each isomer.
9. Which isomer in Problem 8
(a) contains no geometric isomers?
(b) has no double bonds?
(c) has the highest boiling point?
(d) contains geometric isomers, but no double
bonds?
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10. Write the structural formulas of
(a) five different, simple alkanes;
(b)five different, simple alkenes (only
one double bond);
(c) five different, simple alkynes (only
one triple bond);
(d) five different, simple cycloalkanes
(only one ring).
Show that they conform to the general formulas CnH2n+2,CnH2n,CnH2n-2,and
CnH2n,
respectively.
11. A compound, A, has the formula C5H8.
(a) What is the maximum number of rings it
could contain?
(b) What is the maximum number of double bonds
it could contain?
(c) What is the maximum number of triple bonds
it could contain?
On treatment with an excess of hydrogen over a nickel catalyst, one
mole of A absorbs one mole of hydrogen gas.
(d) What is the formula of the product of
this hydrogenation reaction?
(e) How many rings does A contain?
(f) How many double bonds does A contain?
(g) How many triple bonds does A contain?
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