Concentration Calculator

Calculate molarity, molality, percent solutions, and ppm for any solution.

Enter your solution details to compute its concentration in various units. Supports all major concentration types.

Concentration Examples

Explore practical solution concentration calculations.

Molarity of NaCl Solution

Molarity

Calculate the molarity of a solution with 5.85 g NaCl in 1 L water.

Concentration Type: Molarity (mol/L)

Solute Mass (g): 5.85 g

Solute Moles (mol): 0.1 mol

Solvent Mass (g): g

Solution Mass (g): g

Solution Volume (L): 1 L

Density (g/mL): g/mL

Molality of Glucose Solution

Molality

Calculate the molality of a solution with 18 g glucose (0.1 mol) in 500 g water.

Concentration Type: Molality (mol/kg)

Solute Mass (g): 18 g

Solute Moles (mol): 0.1 mol

Solvent Mass (g): 500 g

Solution Mass (g): g

Solution Volume (L): L

Density (g/mL): g/mL

% w/w of Sucrose Solution

Percent w/w

Calculate the mass percent of a solution with 10 g sucrose in 90 g water.

Concentration Type: % w/w (mass/mass)

Solute Mass (g): 10 g

Solute Moles (mol): mol

Solvent Mass (g): g

Solution Mass (g): 100 g

Solution Volume (L): L

Density (g/mL): g/mL

ppm of Lead in Water

ppm

Calculate the ppm of 0.005 g lead in 1 kg water.

Concentration Type: ppm (parts per million)

Solute Mass (g): 0.005 g

Solute Moles (mol): mol

Solvent Mass (g): g

Solution Mass (g): 1000 g

Solution Volume (L): L

Density (g/mL): g/mL

Other Titles
Understanding Solution Concentration: A Comprehensive Guide
Master the science of solution concentration, types, and calculations.

What is Solution Concentration?

  • Definition and Importance
  • Types of Concentration
  • Units and Conversions
Solution concentration is a measure of how much solute is dissolved in a given amount of solvent or solution. It is fundamental in chemistry, biology, and industry.
Common Concentration Units
The most common units are molarity (mol/L), molality (mol/kg), percent solutions (% w/w, % w/v, % v/v), and ppm (parts per million).

Concentration in Real Life

  • A 1 M NaCl solution contains 1 mole of NaCl per liter of solution.
  • A 5% w/v glucose solution has 5 g glucose per 100 mL solution.

Step-by-Step Guide to Using the Concentration Calculator

  • Input Required Data
  • Interpret the Results
  • Apply in Experiments
To use the calculator, select the concentration type and enter the relevant values. The tool computes the concentration and related values instantly.
How to Use the Calculator
Review the results to understand your solution's concentration and plan your experiments accordingly.

Practical Calculator Usage

  • Enter 5.85 g NaCl and 1 L water to see molarity.
  • Test how much solute is needed for a 0.5 M solution.

Real-World Applications of Solution Concentration

  • Biological Systems
  • Industrial Processes
  • Pharmaceuticals and Research
Solution concentration is vital in blood, cellular fluids, fermentation, water treatment, and drug formulation. It ensures correct dosages and optimal reactions.
Where Concentration Matters
Understanding concentration helps in designing experiments, manufacturing, and maintaining biological health.

Concentration in Action

  • Blood plasma has a sodium ion concentration of about 140 mmol/L.
  • Industrial cleaning solutions require precise concentrations for effectiveness.

Common Misconceptions and Correct Methods

  • Confusing Units
  • Incorrect Calculations
  • Ignoring Solution Volume Changes
A common mistake is confusing molarity and molality, or using incorrect units. Always check your units and use the correct formula for each type.
Avoiding Calculation Errors
Always use correct values and double-check calculations, especially when converting between mass and volume.

Misconceptions in Solution Chemistry

  • Using grams instead of moles for molarity gives wrong results.
  • Neglecting solution volume change after adding solute can cause errors.

Mathematical Derivation and Examples

  • Concentration Formula Derivation
  • Worked Calculation Example
  • Interpreting Results
The formulas for concentration are derived from the definitions of each type. For example, molarity is moles of solute per liter of solution.
Sample Calculation
For a solution with 5.85 g NaCl (0.1 mol) in 1 L water, molarity is 0.1 mol/L. For 10 g sucrose in 100 g solution, % w/w is 10%.

Mathematical Examples

  • Calculate molality for 0.1 mol glucose in 500 g water.
  • Find ppm for 0.005 g lead in 1 kg water.