Does pure water have a concentration?
There isn’t any.
In fact we can speak of the
Water is concentrated stuff. With respect to moles per unit volume, it is a much more concentrated solvent than comparable systems, say
What factors influence these properties?
If using molarity to express "number of moles of substance per litre volume of that substance" it is about 55.5 M.
However, somewhat confusingly it can also have a less common application for expressing the number of moles of a substance contained in a litre volume of that substance.
For water, the molar mass is approximately 18 g/mol, and a litre volume of water weighs 1000 g, so the number of moles of water in a litre of water is 1000 / 18 or about 55.5 moles per litre.