A buffer solution is made by dissolving CH3COOH and CH3COONA in water
a) write an equation that shows how this buffer neutralized added acid.
b) Write an equation that shows how this buffer neutralized added base.
c) Calculate the ph of this buffer if it contains 0.20 M CH3COOH and 0.40 M CH3COO-
The Ka for CH3COOH is 1.8*10^-5 , ( -log 1.8 * 10^-5 , -log 2 = -0.301)
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Answer:
ν A buffer helps a solution maintain its pH when
acid or base is added
ν A buffer must contain two components to work
ν a weak acid that reacts with added base
ν a weak base that reacts with added acid
ν Buffers usually contain approximately equal
amounts of a weak acid and its conjugate base
Explanation:
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