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Calkulon

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Molarity (M) is the concentration of a solution, defined as the number of moles of solute dissolved per litre of solution. It is the most commonly used unit of concentration in chemistry.

Stapsgewijze handleiding

  1. 1Count moles of solute (mass / molar mass)
  2. 2Measure volume of solution in litres
  3. 3Molarity M = moles / litres
  4. 4To prepare a solution: weigh moles × molar mass of solute, dissolve, transfer to volumetric flask, add solvent to the mark

Uitgewerkte voorbeelden

Invoer
5.85g NaCl (M=58.5) in 500ml water
Resultaat
0.2 M NaCl solution
moles=0.1; 0.1/0.5=0.2M
Invoer
0.5 mol/L × 2L
Resultaat
1.0 mol solute needed
n = M × V

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