What is Molarity?

Molarity (M) is the concentration of a solution expressed as the number of moles of solute per liter of solution. It is calculated using the formula:

Molarity = \( \frac{\text{Weight (g)}}{\text{Total Molar Mass (g/mol)} \times \text{Volume (L)}} \)

Example Calculation

Example: You dissolve 10 g of NaCl in 2 L of water. The total molar mass of NaCl is 58.44 g/mol.

Using the formula:

Molarity = \( \frac{10}{58.44 \times 2} \) = 0.0855 M

Thus, the molarity of the solution is 0.0855 M.

List of Chemical Elements and Their Molar Masses