Quote Originally Posted by Photo Engineer View Post
That 1000 g/L must be a typo. Think about it Patrick. That does not leave much room for water at all!

The CRC table actually says that 100 grams will dissolve in 100 cc of cold water. It doesn't say what the final volume will be. That would form a 50% solution by weight, which K2CO3 can do. It also says that <100 grams will dissolve in hot water, but not how much less. However, I was not approaching the stated solubility in cold water, and heating usually speeds up solution, so I 'm mystified about why the 320 grams wasn't dissolved after a half hour of stirring and even after sitting overnight.