In a titration experiment,if the initial solution pH is 4.0 and the equivalence point occurs at pH 9.0,then the reaction corresponds to
A) the titration of a weak acid by a strong base.
B) the titration of a weak acid by a weak base.
C) the titration of a weak base by a strong acid.
D) the titration of a strong acid by a strong base.
E) the titration of a strong base by a strong acid.
Correct Answer:
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