Discussion
An analysis reports both hydroxide and bicarbonate alkalinity in the same sample. The correct conclusion is
Answer: A
Correct answer: the analysis is in error
Hydroxide and bicarbonate cannot coexist in the same solution: hydroxide immediately converts bicarbonate to carbonate and water. A sample may contain hydroxide with carbonate, or carbonate with bicarbonate, but never the first and the last together, so a result reporting both indicates a mistake in the titration or the calculation.
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