The Molarity of H2O is dependent on temperature and pressure. Like any calculation of molar concentration it is the moles per liter.
At 25oC and 1 atmosphere of pressure the density of water is 997.0479 g/L, and the molar mass of water is 18.01528 g/mol. This means there are 55.345 moles of H2O in 1 L of water, so it is 55.345 M.
The density of liquid water is 1000 grams / liter. Since molarity is given by moles per liter, convert 1000 grams into moles.
1000 grams (1 mole/18.02 grams) = 55.49 moles
So, 55.49 moles per liter = 55.49 M.
Molarities for solid and gaseous water are different; densities are different, but same steps as I showed for solving.
Molality of pure water is 55.5. it can be calculated as
m = no of moles/ Kg of solvent
For Pure water
in this case water is act as both solute and solvent, so no of moles in 1 kg of water is 55.5 (1000/18).
m = 55.5/1
= 55.5
The molar mass of water is 18 g/mole. In one liter, at 4ºC there will be 1000 g (density = 1g/ml). Thus, 1000g x 1 mol/18 g = 55.56 M. At 25ºC, the density of water is ~1.18, thus, 1000 ml x 1.18g/ml = 1180g. The molarity will be 1180 g x 1 mol/18 g = 65.56 M
The molarity of water depends with the amount of water. To calculate the molarity of water, the number of moles of a solute is usually divided by the liters of the solution.
it depends on the concentration of the solution that is, the amount of salt in the amount of water
The molality of water is about 55.6 M. This measurement is only for pure water, as anything with minerals or other water-based solutions will affect the molality.
Molarity of water is 55.5 mol/L
55.6
In dilute solutions... ie closer a solution is to pure water the closer molality and molarity come to equalling each other. This is because the molality uses mass and molarity uses volume, the ratio of these two (mass and volume) is density, and water has the density of 1 therefore the mass and volume are equal to each other. THEREFORE calculating the molarity of water is the same as calculating the molality of water.
0.0125
When you take a solution and make it pure, thus removing the solvent and returning the dissolved compound to its pure molarity
80g of NaOH dissolved in 250ml. of water find the molarity of this solution ?
Sugar does not have measurable molarity. Molarity is used to determine the concentration of a solute in a solution. For example, you could measure the molarity of sugar in a sugar-water solution.
the molarity of water is 55.5.
55.49M
In dilute solutions... ie closer a solution is to pure water the closer molality and molarity come to equalling each other. This is because the molality uses mass and molarity uses volume, the ratio of these two (mass and volume) is density, and water has the density of 1 therefore the mass and volume are equal to each other. THEREFORE calculating the molarity of water is the same as calculating the molality of water.
0.0125
Molarity is a concentration unit of solutions, pure benzene is not a solution so this term is meaningless for a pure liquid. In other words: Molarity of a solution is a numerical way of saying exactly how much solute is dissolved in a solvent .Molarity is equal to the moles of solute divided by the liters of solution. Molarity of a solution can be calculated by using the following formula: M= moles of solute/liters of solution
When you take a solution and make it pure, thus removing the solvent and returning the dissolved compound to its pure molarity
The molarity is 0,388.
80g of NaOH dissolved in 250ml. of water find the molarity of this solution ?
When you take a solution and make it pure, thus removing the solvent and returning the dissolved compound to its pure molarity
This molarity is 3 M.
The molarity is o,2.
Sugar does not have measurable molarity. Molarity is used to determine the concentration of a solute in a solution. For example, you could measure the molarity of sugar in a sugar-water solution.