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Reef Chemistry Question of the Day #91
The same mixture is made as in question 90:
A stock solution is made by dissolving 8.401 grams of baking soda (sodium bicarbonate; molecular weight = 84.01 g/mole) into enough pure freshwater at 25° C to make 1 L total volume. This solution has a pH of 8.300 and an alkalinity of 100.00 meq/L (~280 dKH). 1.000 mL of this solution is added to 99.000 mL of natural seawater (pH 8.200; alkalinity = 2.500 meq/L or 7.00 dKH).
The pH of the final solution after complete equilibrium of all gases with normal air is:
A. Exactly 8.200
B. Exactly 8.201
C. Above 8.201
D. Below 8.200
Good luck!
.
The same mixture is made as in question 90:
A stock solution is made by dissolving 8.401 grams of baking soda (sodium bicarbonate; molecular weight = 84.01 g/mole) into enough pure freshwater at 25° C to make 1 L total volume. This solution has a pH of 8.300 and an alkalinity of 100.00 meq/L (~280 dKH). 1.000 mL of this solution is added to 99.000 mL of natural seawater (pH 8.200; alkalinity = 2.500 meq/L or 7.00 dKH).
The pH of the final solution after complete equilibrium of all gases with normal air is:
A. Exactly 8.200
B. Exactly 8.201
C. Above 8.201
D. Below 8.200
Good luck!
.