buffers

Description

a level Chemistry Flashcards on buffers, created by Choon Fuller on 05/14/2015.
Choon Fuller
Flashcards by Choon Fuller, updated more than 1 year ago
Choon Fuller
Created by Choon Fuller about 9 years ago
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Question Answer
What is the equilibrium in an acid buffer? HA(aq) = H+(aq) + A-(aq)
What happens to the acid buffer when you add alkali OH- reacts with HA to produce water and A-.
Which way does the acid buffer equilibrium shift when an alkali is added? Right
Which way will the acid buffer equilibrium shift if an acid is added? Left
What happens when an acid is added to an acid buffer? H+ combines with A- to produce more HA
What is an acid buffer made from? A mixture of a weak acid and a soluble salt of the same acid
What is a basic buffer? a mixture of a weak base and a salt of that base
Give an example of what a buffer might be used for detergents or shampoos
What equation is used to calculate the pH of a buffer? Same calculation used for a weak acid Ka
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