S BUFFER SOLUTIONS RESIST CHANGES IN pH

strong bases and acids arc neutralized by the components of a buffer solution. This does not mean that the pH remains unchanged, however. When NaOH is added to the buffer system we are using as our example, sodium acetate is produced. Because. sodium acetate behaves as a weak ba.se (it accepts hydrogen ions but not very well), there is a. slight increase in pH. When H i l is added, acetic acid is produced. Because acetic acid behaves as a weak acid, there is a slight decrease in pH. Buffer solutions therefore resist only large chinas in pH. 

Hydrochloric acid added to a solution containing acetic acid and sodium acetate is neutralized by the sodium acetate to form additional acetic acid. 

Why must a buffer solution consist of at least two dissolved components  

Was this your answer One component is needed to neutralize any incoming acid, and the second component is needed to neutralize any Incoming base. 

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