Solubility of Silicic Acid

Apr 2017
The question I have is what is the difference between these two forms of silicic acid. Looking at the chemical formula, one can see one is in hydrated form and the other one has water, but not explicitly mentioned in the formula, it just says hydrate. But the molecular weight is different, for O2Si-hydrate it is 60.09 and for H2O3Si it is 96.11g/mol.
And the second issue is the solubility, I was not able to dissolve it in water, ethanol or mixture of both. I have gone through some literature but it is not clear enough. Any help in regards to this will be appreciated.