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Why has monochloroethanoic acid higher p...

Why has monochloroethanoic acid higher `pK_(a)` value than dichloroethanoic acid ?

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Monochloroethanoic acid `(ClCH_(2)COOH)` has only one chlorine atom with-I effect while dichlorethanoic acid `(Cl_(2)CHCOOH)` has two chlorine atoms. As a result, release of proton from monochloroethanoic acid is difficult as compared to dichloroethanoic acid. Therefore, monochloroethanoic acid has `pK_(a)` value (2.87) than dichloroethanoic acid (1.26) and it is a weaker acid.
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DINESH PUBLICATION-CARBOXYLIC ACIDS -QUESTIONS FROM BOARD EXAMINATIONS
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  2. Write IUPAC name of the compound

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  3. Why has monochloroethanoic acid higher pK(a) value than dichloroethano...

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  4. Why is ethanoic acid weaker acid than benzoic acid ?

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  5. Write IUPAC name of CH(3)-underset(Cl)underset(|)(CH)-underset(COOH)un...

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  6. Give the formulae of [A] and [B] CH(3)MgBr+CO(2)overset((i)"Dry ethe...

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  7. Give the formula of [A] and [B] CH(3)-overset(O)overset(||)C-OHovers...

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  8. How will you convert acetic acid into acetaldehyde ?

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  9. Write the IUPAC name of CH(3)-CequivC-CH=CH-overset(O)overset(||)C-OH

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  10. How will you prepare benzoic acid from ethyl benzene ?

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  11. Complete the following :

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  12. Write chemical equation to illustrate Hell-Volhard-Zelinsky reaction.

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  13. How will you convert bromobenzene to benzoic acid ?

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  14. How will you convert ethyl cyanide to ethanoic acid ?

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  15. How will you convert benzoic acid into benzaldehyde ?

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  16. How will you distinguish between phenol and benozic acid ?

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  17. Arrange the following compounds in the increasing order of their prope...

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  18. Complete each synthesis by filling the missing starting materials, rea...

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  19. How will you bring about the following conversions in not more than tw...

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  20. A compound (A) on oxidation gives B (C(2)H(4)O(2)). (A) also reacts wi...

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