SACE Stage 2 Chemistry Practice Questions - SACE Stage 2 Chemistry External Assessment Exam

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Increased atmospheric carbon dioxide levels lead to ocean acidification. Which chemical species decreases in concentration as aqueous hydrogen ions increase, disrupting calcifying marine organisms?

Bicarbonate ions (HCO3-) Carbonate ions (CO3 2-) Carbonic acid (H2CO3) Dissolved oxygen (O2)

Correct Answer:

Carbonate ions (CO3 2-)

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