Problems when mixing sodium carbonate

[Randy Holmes-Farley]

My reason for pointing that out is that even if nothing else changed from the pH difference or the baking, one would expect it to show twice as much color when twice as concentrated.

I would not be concerned.

 

[atoll]

1/2 teaspoon of sodium carbonate in 200ml of RO purchased from a chemical supply company. Photo taken through 2.1/2" sitting on a white background.