#Solubility

I was mixing a 1 M sodium chromate solution, but I mixed it in a 250 mL flask and added the wrong amount of water. The first evening the color was a bright orange, but when I checked it again the next day it was almost colorless, with no crystal growth.

I set up the solution in a clean beaker, capped it, and left it overnight in a dim room. My only variables were the volume and the mixing speed; I didn’t add any extra reagents.

What’s happening to my chromate here? Am I mis‑calculating solubility, or is there some precipitation/oxidation happening that I’ve overlooked? I’d appreciate a quick explanation or pointers to the key literature to figure out where I went off track.