🧪 Solution Concentration Calculator

What is Solution Concentration?

Solution concentration tells us how much solute (chemical) is dissolved in a certain amount of solvent or solution. In simple words, it measures the strength of a solution — whether it is strong or dilute.

Types of Concentration Units

• Molarity (M): Moles of solute per liter of solution.
• Molality (m): Moles of solute per kilogram of solvent.
• Percent by Mass (% w/w): (Mass of solute / Mass of solution) × 100.
• Percent by Volume (% v/v): (Volume of solute / Volume of solution) × 100.
• Parts per million (ppm): (Mass of solute / Mass of solution) × 10⁶.

Formula (For Molarity)

$$M = \frac{n}{V}$$

• M = Molarity (mol/L)
• n = Moles of solute
• V = Volume of solution (liters)

How to Calculate (Steps)

1. Write the mass of solute (in grams).
2. Find its molar mass (from the periodic table).
3. Calculate moles using the formula: $$n = \frac{mass}{molar\ mass}$$
4. Write the volume of the solution (in liters).
5. Apply the formula: $$M = \frac{n}{V}$$
6. The calculator will instantly show the result!

Example

If 5 grams of NaCl (molar mass = 58.5 g/mol) is dissolved in 500 mL of water:

$$n = \frac{5}{58.5} = 0.0855$$

$$M = \frac{0.0855}{0.5} = 0.171\ M$$

So, the molarity of the solution is 0.171 M.

Useful Tips

• Always convert volume to liters (mL → L).
• Temperature changes can affect the volume of a solution.
• Molarity gives more accurate results for dilute solutions.