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Rank the acids in order of increasing acid strength: CH3CH2CH2CHBrCOOH (1), CH3CH2CHBrCH2COOH (2), CH3CHBrCH2CH2COOH (3) Group of answer choices 3<2<1 3<1<2 2<1<3 2<3<1 1<2<3 1<3<2

Answer :

Answer:

3 < 2 < 1.

Explanation:

Inductive effect:

Electron (sigma) displacement towards the highly electronegative atom (eg. Cl-, Br-, -NO2 etc) where one end becomes positively charge and the other becomes negatively charge.

In organic carboxylic acids, an electronegative substituent can pull electron density out of an acidic bond through the inductive effect making it electron deficient, resulting in acidity. This effect decreases, the further the electronegative element is from the carboxylate group (-COOH).

1. CH3CH2CH2CHBrCOOH

2. CH3CH2CHBrCH2COOH

3. CH3CHBrCH2CH2COOH

In decreasing acidity,

1 > 2 > 3

While in increasing acidity,

3 < 2 < 1

          The Answer is: 3 < 2 < 1.

When the Inductive effects are:

  • When The Electron (sigma) displacement towards the highly electronegative atom (eg. Cl-, Br-, -NO2, etc) where one end it becomes positively charged and also that the other becomes negatively charged.
  • When In organic carboxylic acids, also an electronegative substituent can pull electron density out of an acidic bond through the inductive effect making it electron-deficient, resulting in acidity.
  • Also, This effect decreases, the further the electronegative element is from the carboxylate group (-COOH).
  1. Then CH3CH2CH2CHBrCOOH
  2. After that CH3CH2CHBrCH2COOH
  3. Then CH3CHBrCH2CH2COOH
  • When In decreasing acidity are,
  • Then 1 > 2 > 3
  • While in increasing acidity,
  • Thus, 3 < 2 < 1

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