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The strongest conjugate base is (a) NO(...

The strongest conjugate base is
(a) `NO_(3)^(-)`
(b)`Cl^(-)`
(c)`SO_(4)^(2-)`
(d)`CH_(3)COO^(-)`

A

`NO_(3)^(-)`

B

`Cl^(-)`

C

`SO_(4)^(2-)`

D

`CH_(3)COO^(-)`

Text Solution

AI Generated Solution

The correct Answer is:
To determine the strongest conjugate base among the given options, we need to analyze the strength of the corresponding acids from which these conjugate bases are derived. The general principle is that the weaker the acid, the stronger its conjugate base. ### Step-by-Step Solution: 1. **Identify the Conjugate Bases**: - (a) `NO3^(-)` is the conjugate base of nitric acid (HNO3). - (b) `Cl^(-)` is the conjugate base of hydrochloric acid (HCl). - (c) `SO4^(2-)` is the conjugate base of sulfuric acid (H2SO4). - (d) `CH3COO^(-)` is the conjugate base of acetic acid (CH3COOH). 2. **Determine the Strength of Corresponding Acids**: - HNO3 (nitric acid) is a strong acid. - HCl (hydrochloric acid) is also a strong acid. - H2SO4 (sulfuric acid) is a strong acid as well. - CH3COOH (acetic acid) is a weak acid. 3. **Analyze the Conjugate Bases**: - The conjugate bases of strong acids (NO3^(-), Cl^(-), SO4^(2-)) are weak bases because strong acids completely dissociate in solution. - The conjugate base of the weak acid (CH3COO^(-)) is a stronger base because acetic acid does not completely dissociate. 4. **Conclusion**: - Since CH3COO^(-) is derived from a weak acid (acetic acid), it is the strongest conjugate base among the options provided. Therefore, the strongest conjugate base is **(d) CH3COO^(-)**.
To determine the strongest conjugate base among the given options, we need to analyze the strength of the corresponding acids from which these conjugate bases are derived. The general principle is that the weaker the acid, the stronger its conjugate base. ### Step-by-Step Solution: 1. **Identify the Conjugate Bases**: - (a) `NO3^(-)` is the conjugate base of nitric acid (HNO3). - (b) `Cl^(-)` is the conjugate base of hydrochloric acid (HCl). - (c) `SO4^(2-)` is the conjugate base of sulfuric acid (H2SO4). ...
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