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Molarity Calculator

Calculate the molarity (molar concentration) of a solution using the formula M = n/V. Essential for chemistry calculations and solution preparation.

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Calculate molarity from moles of solute and volume of solution
Formula & Theory

Molarity Formula:

M = n / V

Where: M = Molarity (mol/L), n = moles of solute, V = volume of solution (L)

Key Concepts:

  • • Molarity is moles of solute per liter of solution
  • • Symbol: M (capital M)
  • • Units: mol/L or M
  • • Temperature dependent (volume changes)

Example:

0.5 moles of NaCl in 2 L of solution:
M = 0.5 mol ÷ 2 L = 0.25 M

Common Concentrations:

  • • Physiological saline: ~0.15 M NaCl
  • • Concentrated HCl: ~12 M
  • • Dilute solutions: 0.001-0.1 M
  • • Standard solutions: 0.1 M, 1.0 M
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