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The acidic character of alcohols is due ...

The acidic character of alcohols is due the polar nature of O-H bond. An e releasing group `(- CH_(3) -C_(2)H_(5))` increases e density on oxygen thus decreasing the acidity while e withdrawing group increases the acidity.
Which is the strongest acid among:

A

`CH_(3)OH`

B

`CH_(3)CH_(2)OH`

C

`CICH_(2)OH`

D

`NO_(2) - CH_(2)- OH`

Text Solution

Verified by Experts

The correct Answer is:
D
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Carboxylic acids are distinctly acidic and ionise in water to give H_3 O^+ ions. In general, electron withdrawing groups increase the acidity of carboxylic acids while electron donating groups decrease the acidity of the carboxylic acid. The electron releasing groups such as -CH_3 -OH, -NH_2 and -OCH_3 make benzoic acid weaker while electron withdrawing groups such as -CI, -NO_2 , etc., make benzoic acid stronger. The ortho isomer of every substituted benzoic acid is the strongest among the three isomers due to effect known as ortho effect. Carboxylic acids neutralise alkalies, decompose carbonates and bicarbonates evolving CO_2 with brisk effervescence. Arrange the following in increasing order of acidic strength : FCH_2 COOH ,CH_3 COOH, CICH_2 COOH ,CH_3 CH_2 OH ,C_6 H_5 COOH

Carboxylic acids are distinctly acidic and ionise in water to give H_3 O^+ ions. In general, electron withdrawing groups increase the acidity of carboxylic acids while electron donating groups decrease the acidity of the carboxylic acid. The electron releasing groups such as -CH_3 -OH, -NH_2 and -OCH_3 make benzoic acid weaker while electron withdrawing groups such as -CI, -NO_2 , etc., make benzoic acid stronger. The ortho isomer of every substituted benzoic acid is the strongest among the three isomers due to effect known as ortho effect. Carboxylic acids neutralise alkalies, decompose carbonates and bicarbonates evolving CO_2 with brisk effervescence. among which is the strongest acid .

Knowledge Check

  • The acidic character of alcohols is due the polar nature of O-H bond. An e releasing group (- CH_(3) -C_(2)H_(5)) increases e density on oxygen thus decreasing the acidity while e withdrawing group increases the acidity. Which among the following is most acidic

    A
    B
    C
    D

  • The acidic character of alcohols is due the polar nature of O-H bond. An e releasing group (- CH_(3) -C_(2)H_(5)) increases e density on oxygen thus decreasing the acidity while e withdrawing group increases the acidity. Which among the following is a better proton acceptor

    A
    `CH_(3)O^(-)`
    B
    `OH^(-)`
    C
    `SO_(4)^(2-)`
    D
    `NO_(3)^(-)`

  • The acidic character of 1^@,2^@,3^@ alcohols, H_2O and RC-= CH is of the order

    A
    `H_2O gt 1^@ gt 2^@ gt 3^@ R-= CH`
    B
    `RC-=CH gt 3^@ gt 2^@ gt 1^@ gt H_2O`
    C
    `1^@ gt 2^@ gt 3^@ gt H_2O gt RC-=CH`
    D
    `3^@ gt 2^@ gt 1^@ gt H_2O gt RC-=CH`

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    Carboxylic acids are distinctly acidic and ionise in water to give H_3 O^+ ions. In general, electron withdrawing groups increase the acidity of carboxylic acids while electron donating groups decrease the acidity of the carboxylic acid. The electron releasing groups such as -CH_3 -OH, -NH_2 and -OCH_3 make benzoic acid weaker while electron withdrawing groups such as -CI, -NO_2 , etc., make benzoic acid stronger. The ortho isomer of every substituted benzoic acid is the strongest among the three isomers due to effect known as ortho effect. Carboxylic acids neutralise alkalies, decompose carbonates and bicarbonates evolving CO_2 with brisk effervescence. The pK_a value of formic acid is less than that of acetic acid.True or False.

    Carboxylic acids are distinctly acidic and ionise in water to give H_3 O^+ ions. In general, electron withdrawing groups increase the acidity of carboxylic acids while electron donating groups decrease the acidity of the carboxylic acid. The electron releasing groups such as -CH_3 -OH, -NH_2 and -OCH_3 make benzoic acid weaker while electron withdrawing groups such as -CI, -NO_2 , etc., make benzoic acid stronger. The ortho isomer of every substituted benzoic acid is the strongest among the three isomers due to effect known as ortho effect. Carboxylic acids neutralise alkalies, decompose carbonates and bicarbonates evolving CO_2 with brisk effervescence. Give a reaction for the preparation of benzoic acid using a Grignard reagent.

    Carboxylic acids are distinctly acidic and ionise in water to give H_3 O^+ ions. In general, electron withdrawing groups increase the acidity of carboxylic acids while electron donating groups decrease the acidity of the carboxylic acid. The electron releasing groups such as -CH_3 -OH, -NH_2 and -OCH_3 make benzoic acid weaker while electron withdrawing groups such as -CI, -NO_2 , etc., make benzoic acid stronger. The ortho isomer of every substituted benzoic acid is the strongest among the three isomers due to effect known as ortho effect. Carboxylic acids neutralise alkalies, decompose carbonates and bicarbonates evolving CO_2 with brisk effervescence. Give one test to distinguish between phenol and benzoic acid.

    This section contains Assertion and Reason type question. Each question has 4 choices (1), (2), (3) and (4), out of which only one is correct. Assertion (A) Increasing order of acid strength of alcohol is 1^@ alcohol > 2^@ alcohol > 3^@ alcohol Reason (R) An electron-releasing group (-CH_3, -C_2H_5) increases the electron density on oxygen which tends to increases the polarity of the O-H bond.

    Arrange the following compounds in decreasing order of acidity : CH_(3)CH_(2)OH H_(2)C=CH_(2)

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