Molarity of pure water if its density at room temperature is 1.0 g/ cm ³.
To find :-
Molarity of pure water = ?
Molarity = No. of moles of solute / Volume of solution
Before finding the Molarity let us find the mass of one litre of water - so therefore,
Mass of 1 litre = Density of water × volume
= 1 kg / L × 1 L
1 kg = 1000 grams
⇒ Mass of 1 kg of water = Mass / Molar Mass
= 1000 / 18
⇒ Molarity of water = 55.56 / litre