Which of the following compounds is the strongest acid? m-methoxybenzoic acid wa

Question

Which of the following compounds is the strongest acid? m-methoxybenzoic acid water p-bromobenzoic acid p-nitrobenzoic acid m-methylbenzoic acid Select the compound that is produced when CH_3CH_2Br is subjected to the following sequence of steps: Mg, Et_2O then CO_2 then H_3O^+ Ethane (CH_3CH_3) propanol (CH_3CH_2CH_2OH) Propane (CH_3CH_2CH_3) ethanoic acid (CH_3CH_2COOH) propionic acid (CH_3CH_2COOH) Using the pKa values given below, which one of the following compound has the strongest electron-withdrawing group attached? pKa = 2 86 PKa = 1.68 pKa = 4.74 pKa = 2.46 pKa = 3.83 Which one of the following carboxylic acid derivatives has the MOST electrophilic carbonyl group?

Explanation / Answer

7)P-nitrobenzoic Acid is strongest acid in the given acid becuase nitro group is more electron withdrawing group stabilize the negatively chaged conjugate base of acid more affectively.

8)Anser is E propanoic acid

9) the Answer is B because have low Pka value than other acid so more acidic therefore nitro group is stongest electron withdrawing group.

10) Anser is C

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