The pH of fresh groundwater slightly decreases upon exposure to air be – McqOptions

MCQOPTIONS

1.	The pH of fresh groundwater slightly decreases upon exposure to air because
A.	the dissolved oxygen of the groundwater escapes into air.
B.	carbon dioxide from air dissolved in the water.
C.	the dissolved carbon dioxide of the groundwater escapes into air
D.	oxygen from the air is dissolved in the water
Answer» C. the dissolved carbon dioxide of the groundwater escapes into air

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