Concentration Calculator

With the known molar mass of the solute and the density of the solution, the concentration calculator can change the molarity to the percentage concentration. If you know the percentage concentration, you can determine the mass of the substance per 100 g of water.

Understand The Concept of Concentration:

A solution can be described as concentrated or diluted. In chemistry, concentration is defined as:

“The specific amount of a substance (solute) dissolved in a given volume of solvent”

In addition, the concentration is the measure of how much solute is available in comparison to the solvent in the solution. It is expressed in mass per unit volume depending on the properties of a solution hence the solute concentration is expressed in moles or units of volume.

Concentration Formula:

Mathematically, concentration is determined by taking the moles, mass, or volume of solute and dividing it by the moles, mass, or volume of solution. The general formula used to calculate the concentration is as follows:

\(\text{Concentration} = \frac{\text{Number of moles of solute}}{\text{Volume of solution (in liters)}}\)

Steps:

1. Determine the number of moles of solute present:

\(\text{Number of moles of solute} = \frac{\text{Mass of solute (in grams)}}{\text{Molar mass of solute}}\)

2. Measure the volume of the solution in liters:

3. Plug the values you found into the formula for molarity to get the concentration in M.

How Do You Calculate The Concentration?

There are some ways to describe the concentration including molarity, molality, and mass percentage.

• Molarity (M): It is defined as the number of moles of dissolved solute per liter of solution. M = n/V
• Mass Percent: The representation of the concentration of an element in a compound or a component in a mixture (% m/m)
• Molality (m): The number of moles of a solute in a kilogram of solvent. It is expressed as mol/kg

Example:

Suppose you have 0.25 moles of sodium chloride (NaCl) dissolved in 1 liter of water.

Calculate the molarity:

\(\text{Molarity (M)} = \frac{\text{Number of moles of solute}}{\text{Volume of solution (in liters)}}\)

\(\text{Molarity (M)} = \frac{0.25 \text{ moles}}{1 \text{ liter}} = 0.25 , \text{M}\)

In another case, by inputting the solute amount and the solution volume, the concentration calculator chemistry computes the concentration.

Additional Queries:

How Much Is 1% Concentration?

1% concentration is obtained by mixing 1g of a substance with a weight of 100 g.

E.g: 1% (w/w) salt in sand

Which Factors Affect The Concentration of a Solution?

• Solubility
• Pressure
• Temperature
• Volume of solvent
• Presence of other solutes
• Surface area of solute particles