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This pertains to the Merck Index.

I would have to say that the exact solubility is not very clear like for ex.

Sodium Sulfate
solubility listed is: Sol in ~3.6 parts water

-I don't know what to make of this information since If I have to fill up a chart that I make with the solubilities listed tin this chemical table I'm not sure what I'm supposed to put down or should I just look up the exact solubility online ?

Thanks =)

I would take that to mean 1 part compound + about 3.6 parts water and you have a solution of the compound. That would be about 1 in 4 or a little less than 20%.

So I guess I'm not going to get it in g/ml then

What's a "part of water" supposed to be?

Thanks Dr.Bob =)

=( I guess nobody will help me with what "part water" means??

If you want clarifying on that is it for example say

1g compound and 1g water would be 1part compound and 1 part water?

HELP??

When you come across solubility information in the Merck Index, such as the one for sodium sulfate, the listed value of "Sol in ~3.6 parts water" means that sodium sulfate is soluble in approximately 3.6 parts water.

To understand this information better, you can consider it in the following way: For every 3.6 parts of water, you can dissolve 1 part of sodium sulfate. So, if you have an amount of water that is equivalent to 3.6 units (whatever units you are using), you can dissolve 1 unit of sodium sulfate.

When filling up a chart or compiling solubility information, you have a few options:

1. You can include the solubility information as listed in the Merck Index. For sodium sulfate, you can put down "Sol in ~3.6 parts water."
2. If you want to be more precise or have a specific requirement for exact solubility values, you can conduct further research to find more accurate values for solubility. This can be done by searching online resources or scientific literature that provide more precise solubility data for sodium sulfate.

So, in summary, you can include the solubility information as provided in the Merck Index or seek more precise values through additional research if needed.