what is the molarity of a solution prepared by dissolving 2.24 grams of NaOH in enough deionized water to obtain 500.0ml of solution?The molar mass of NaOH is 40.0g
Molarity= 2.24/40 /.5= 2.24/20
To calculate the molarity of a solution, you need to know the number of moles of the solute (NaOH) and the volume of the solution.
The first step is to calculate the number of moles of NaOH using its molar mass. The molar mass of NaOH is given as 40.0 g/mol.
To convert grams to moles, divide the given mass by the molar mass:
number of moles = mass / molar mass.
number of moles of NaOH = 2.24 g / 40.0 g/mol = 0.056 mol.
Next, you need to determine the volume of the solution. It is given as 500.0 mL.
To convert milliliters (mL) to liters (L), divide by 1000:
volume of solution = 500.0 mL / 1000 = 0.500 L.
Finally, you can calculate the molarity by dividing the number of moles by the volume of the solution:
Molarity (M) = number of moles / volume of solution.
Molarity of NaOH = 0.056 mol / 0.500 L = 0.112 M.
Therefore, the molarity of the solution is 0.112 M.