Strong conjugate base

Note especially that weak acids do not have strong conjugate bases, as stated in some texts. For example, acetic acid is weak, and its conjugate base, the acetate ion, is certainly not strong. It is even weaker as a base than acetic acid is as an acid. 

Weak acids (WA) have strong conjugate bases (SB), while strong acids (SA) have weak conjugate bases (WB). The weaker the acid or base, the stronger its conjugate. 

To summarize, strong acids yield weak conjugate bases while weak acids yield relatively strong conjugate bases. 

Sodium amide (Na+ NH2) is frequently used as the base in forming acetylide salts. The amide ion ( NH2) is the conjugate base of ammonia, a compound that is itself a base. Ammonia is also a very weak acid, however, with Ka = 10 35 (pA = 35). One of its hydrogens can be reduced by sodium metal to give the sodium salt of the amide ion, a very strong conjugate base. 

Explain why a weak acid has a strong conjugate base. Give an eqnation that iUnstrates yonr answer. (19.2)... 

The ion or molecule formed by the loss of a proton from an acid is the conjugate base. Strong acids form weak conjugate bases and weak acids form strong conjugate bases. 

The carbonate ion in equation (2) yields a basic solution because it is the strong conjugate base of the weak acid HC03. ... 

A strong acid has a weak conjugate base, whereas a weak acid has a relatively strong conjugate base. Explain. 

Which of the following acids have relatively strong conjugate bases ... 

C A strong acid has a relatively strong conjugate base. 

Amines are weak acids, and are deprotonated only in the presence of a strong base. Treatment of a secondary amine with a strong base will generate a strong conjugate base (R2NH -1- base R2N" M ), the amide... 

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