A titration is observed to have a pH = 4.5 at the equivalence point. What can be concluded about the titration? The titration involves a weak base with a strong acid added. O The titration involves a weak acid with a strong base added. The titration involves a weak base with a strong base added. O The titration involves a strong acid with a strong base added. The titration involves a strong base with a strong acid added.

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