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Arrange the following as stated : 'Inc...

Arrange the following as stated :
'Increasing order of acidic strength'.
`ClCH_(2) COOH, CH_(3) CH_(2) COOH, ClCH_(2) CH_(2) COOH, (CH_(3))_(2) CHCOOH, CH_(3) COOH`.

Text Solution

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Since the +I-effect of alkyl groups decreases in the order: `(CH_(3))_(2)CH- gt CH_(3)CH_(2)- gt CH_(3) -`, therefore, acid strength increases in the order : `(CH_(3))_(2)CHCOOH lt CH_(3)CH_(2) COOH lt CH_(3)COOH`
Further, since -I-effect decreases with distance, therefore, `ClCH_(2)CH_(2)COOH` is a weaker acid than `ClCH_(2)COOH`. combining these two trends, the acid strength increases in the order:
`(CH_(3))_(2)CHCOOH lt CH_(3)CH_(2)COOH lt CH_(3)COOH lt ClCH_(2)CH_(2)COOH lt ClCH_(2)COOH`.
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PRADEEP-ALDEHYDES, KETONES AND CARBOXYLIC ACIDS -ADDITIONAL QUESTIONS (VERY SHORT ANSWER QUESTIONS)
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  5. What is meant by 'acidity constant', K(a)? How is it expressed?

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  6. What makes ethanoic acid a stronger acid than ethanol?

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  7. What makes acetic acid a stronger acid than phenol?

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  9. Arrange the following as stated : 'Increasing order of acidic streng...

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  10. Why is pKa of F-CH(2)COOH lower than that of Cl-CH(2)COOH?

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  11. How would you distinguish experimentally between an alcohol and a carb...

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  13. Which one of the following is an example of Hell-Volhard Zelinsky reac...

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  14. Why HCOOH does not give HVZ reaction but CH(3)COOH does ?

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  15. Name the reagent used to convert carboxylic acids directly to the corr...

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  16. Account for the following : (i) Benzoic acid does not undergo Friede...

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  17. What is vinegar ?

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  18. Mention a chemical property in which formic acid (methanoic acid) diff...

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  19. How will you convert an acid into an ester without using an alcohol?

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  20. Why is ester hydrolysis slow in the beginning and becomes faster after...

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