Question

What is the molarity of a solution with 58.9 g of glucose (molar mass: 180.16 g/mol) dissolved in water to a total volume of 450.0 mL

Answer 1

The molarity of the solution is 0.727 M.

Step-by-step explanation:

To find the molarity of a solution, we first need to calculate the number of moles of solute (glucose) and the volume of the solution. The molar mass of glucose is 180.16 g/mol.

To find the number of moles of glucose, we divide the mass of glucose by its molar mass:

(58.9 g / 180.16 g/mol) = 0.327 mol

To find the volume of the solution, we convert the given volume from milliliters to liters:

450.0 mL = 0.450 L

Finally, we can calculate the molarity using the formula:

Molarity (M) = moles of solute / volume of solution (L)

Molarity = 0.327 mol / 0.450 L = 0.727 M

Answer 2

Molarity of solution = 0.727M

Step-by-step explanation:

Molarity of solution is defined as moles solute per Liter of solution. For the posted problem use M = n/V where n = moles of solute and V = Liters of solution. That is ...

n = 58.9g/180.16g·mole⁻¹ = 0.327 mole (3 sig. figs.)

V = 450.0ml/1000ml·L⁻¹ = 0.450L (3 sig. figs.)

∴ Molarity = n/V = 0.327mole/0.450L = 0.727mol/L = 0.727M