[TaggerFeld]

Hello. I do not know where to start on this problem. The chapter is on the greenhouse effects & global warming. The original question asks, "If the conc. of carbon dioxide in the atmosphere were to double from its current value of 300 ppm, what would be the calculated pH of rainwater assuming that carbon dioxide was the only acidic input?" I have no idea where to start. Please help me and give me a starting guide. Thank you very much.

[Borek]

Henry's law at first, weak acid dissociation then.

[TaggerFeld]

Ah, thank you Borek.