# What is a soluble carbonate?

Dec 6, 2016

As a matter of fact, lithium carbonate is not terribly soluble in water, and is less soluble in water than $N {a}_{2} C {O}_{3}$, ${K}_{2} C {O}_{3}$; and interestingly, $L {i}_{2} C {O}_{3}$ is LESS soluble in hot water. There is a good reason for this, and if you are an undergrad you will be able to give the reason.
Ammonium salts are generally soluble. However, ammonium carbonate might be be better proposed as ${\left\{N {H}_{4}\right\}}^{+} {\left\{H C {O}_{3}\right\}}^{-}$ rather than ${\left(N {H}_{4}\right)}_{2} C {O}_{3}$.