Answer
Higher
Work Step by Step
If the water is slightly alkaline, then by definition, the water is slightly basic.
Because the water is basic, it will want more [H+] so more CO2 will dissolve in the basic water.
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.