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Which has higher b.p.? (a). Phenol (...

Which has higher b.p.?
(a). Phenol
(b). Benzenethiol

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Although, the M.W. of Pb-SH is hgiher, phenol has high b.p. it is because there is no H-bonding in PbSH.
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Which has higher boiling point ? (I) Phenol (II) Benzenethiol b. Which has higer melting point ? (I) Hydroquinone (II) Catechel c. Explain the less solubility and lower boiling point of: (I) 0-Nitrophenol (II) 0-Hydroxy benzaldehyde (III) 0-Hydroxybenozioc acid (salicylic acid) compared with their p- and m- isomers. d. Which isomer (o, m-, or p) of hydroxy acetophenone is steam volatile ? e. Which of the following shows chelation ? (I) 0-Cresol (II) Oil of wintergreen (III) 0-lodo phenol (IV) 0-Fluoro phenol (V) 0-Cyano phenol f. Why are the dipole moments of phenol 1.7 D) and methanol (1.6 D) in opposite direction ? g. Why is the dipole moment of p-nitro phenol (5.0 D) is reater than of nitro benzene (4.0 D) or phenol ? h. Why is the (C----O) bond in alcohol larger than in phenol ? i. Compare the boiling points and water solubilities of phenol and toluene. j. Why are monophenolic compounds (e.g., cresols) are insoluble in H_(2)O ? k. Which is more soluble in H_(2)O : hexanol (I) or cyclohexanol (II) ?

Which has higher m.p? (a). Hydrozqunone (b). Catechol

Phenol has

Which has the lowest b.p?

Which one has higher diversity

Alcohols have higher B.P. due to

NH_3 has a much higher b.p. than PH_3 because

BANSAL-ALCOHOL, ETHERS & PHENOL, OXIDATION & REDUCTION -Exercise 3
  1. Predict the principal organic product of each of the following reactio...

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  2. Deduce the identify of the missinig compounds in the following raction...

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  3. Explain why ArOR ethers are cleaved to give RI and ArOH rather than Ar...

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  4. C(2)H(5)OHoverset(PCl(5))rarr(A)overset(KCN)rarr(B)overset(H(3)O^(+))r...

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  5. CH(3)CH(2)CH(2)OHoverset(PBr(5))rarr(A)overset(KOH(Alc))rarr(B)overset...

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  6. A compound (X) with the molecular formula C(3)H(8)O can be oxidized to...

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  7. Outline a mechanism to account for different isomer formed when react...

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  8. Differentiate: (a). 1-Hexanol and 1-chlorohexane (b). Diethyl ethe...

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  9. Complete the following equations & comment (i). MeOEtoverset(HI)to? ...

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  10. Diethyl ether behaves as base. Why?

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  11. Sometimes explosionn occurs durring the distilliation of an ether Expl...

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  12. Explain why ArOR ethers are cleaved to give RI and ArOH rather than Ar...

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  13. Complete the following with appropriate reagent:

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  14. Indicate steps which would convent: (A) Phenol to acetophenone (B)...

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  15. Compare rate of reaction towards pinacol pinacolone rearrangement. u...

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  16. Give the product of the following reaction: (iii). Me-overset(O...

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  17. Sometimes exploson occurs during distillation of ether sample. Give th...

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  18. Choose the reaction in each of the following pairs that proceeds at th...

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  19. Which has higher b.p.? (a). Phenol (b). Benzenethiol

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  20. Which has higher m.p? (a). Hydrozqunone (b). Catechol

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