Explain the following:
(i) Alkanes with odd number of carbon atoms have low melting point than those with an even number.
(ii) Wurtz reaction is not very useful when two different alkyl halides are used.
i. Alkane molecules with odd numbers of carbon atoms have lower intermolecular attractions and correspondingly lower melting points because alkanes with an odd number of carbon atoms pack
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write the chemical equation for following named reactions:
(a) Reimer-Tiemann reaction
(b) Kolbe reaction
(c) Claisen reaction
(d) Knoevenagel reaction
(e) Willgerodt reaction
What are the limitations of Friedel-Crafts alkylation?
Suggest the reaction that can best be used to prepare following ethers by Williamson ether synthesis
(a) CH3CH 2— O— CH= CH2
(b) 
Write chemical reactions for the following:
(i) Kolbe Schmidt reaction
(ii) Strecker synthesis
(iii) Dieckmann cobndensation
(iv) Knoevenagel reaction
(v) Perkin condensation
Predict the product(s) of the following reactions:
(i) Nitration of azole
(ii) Friedel-Crafts acylation of pyridine
(iii) Reduction of pyrrole with zinc and ethanoic acid.
- rite the structures of the following compounds:
- (i) Methyl 3-methylbutanoate
- 4-Hydroxy-4-methyl-2-pentanone
Explain the following:
(i) Alkanes with odd number of carbon atoms have low melting point than those with an even number.
(ii) Wurtz reaction is not very useful when two different alkyl halides are used.