[cogitator]

Here's a better experiment. Get a bottle/flask that you can fill with seawater and which you can seal. Fill it about 2/3 full of seawater. Accurately measure the pH. Then drop a chunk of dry ice into the flask. Wait a day and measure the pH again.

[Hunble]

Interesting experiment:

Totally outside of anything that can happen on the Earth, but as a test of the buffering abilities of saltwater, an experiment that I may perform.

In all honesty, I have no idea what the pH results would be. You got me rather curious.

[Hunble]

Cogitaor:

That is a very interesting experiment. This is Friday, so it is too late for my wife to bring home some dry ice from the hospital. However, on Monday, I should be able to do this experiment.

Question: How will the pH of saltwater alter in a 100% CO2 atmosphere?

My guess is that the pH will not change, but you got me rather curious. This is an experiment that I will perform.