Randy Holmes-Farley
Reef Chemist
Staff member
Super Moderator
Excellence Award
Expert Contributor
Article Contributor
R2R Research
My Tank Thread
- Joined
- Sep 5, 2014
- Messages
- 67,146
- Reaction score
- 63,494
Reef Chemistry Question of the Day #88
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 alkalinity of the final solution is closest to:
A. 3.500 meq/L (9.80 dKH)
B. 3.475 meq/L (9.73 dKH)
C. 2.515 meq/L (7.04 dKH)
D. 2.500 meq/L (7.00 dKH)
Good luck!
.
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 alkalinity of the final solution is closest to:
A. 3.500 meq/L (9.80 dKH)
B. 3.475 meq/L (9.73 dKH)
C. 2.515 meq/L (7.04 dKH)
D. 2.500 meq/L (7.00 dKH)
Good luck!
.
