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Mol or not to Mol

Mole is a measure of the concentration of the solution. When ordering from a chemistry supply, many solutions will be specified in mole. 1 Mole is approximately 6.02x10^23 molecules.
 
A molar solution is 1 mol (molecular weight measured in grams) per litre of solution. So, say sodium sulfate (molecular weight 142), a molar solution would be 142 g/l.
 
Chemists do their calculations and work in mols since it makes both much easier.
 
As a chemist/biochemist and later photo-chemist Molar solutions are used for specific purposes where accuracy is important, usually in experiments or testing often when titrating to determine a concentration of something else. Just makes calculations easier.

In practice the only molar solution I have is Sodium Hydroxide, I forget the strength offhand it came from a lab I ran I use it in print developers.

Ian
 
Probably a bad example as your original 40g/l is now a little less due to its absorbing atmospheric CO2.
 
Martin Rickards said:
A molar solution is 1 mol (molecular weight measured in grams) per litre of solution. So, say sodium sulfate (molecular weight 142), a molar solution would be 142 g/l.
Click to expand...

....and so you'll see something like a requirement to use, for example, a quantity of 0.1mol solution.
 
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