Which of the following is TRUE?
a) An effective buffer has a [base]/[acid] ratio in the range of 10 - 100.
b) A buffer is most resistant to pH change when [weak acid] = [conjugate base]
c) An effective buffer has very small absolute concentrations of weak acid and conjugate base.
d) A buffer cannot be destroyed by adding too much strong base, it can only be destroyed by adding too much strong acid.
e) None of the above are true.
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