A wastewater sample contains 10 mmol/l of O ions at 25° C. The pH of

1.	A wastewater sample contains 10 mmol/l of O ions at 25° C. The pH of this sample is
A.	8.6
B.	8.4
C.	5.6
D.	5.4
Answer» E.

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A wastewater sample contains 10 mmol/l of O ions at 25° C. The pH of this sample is

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