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Cum se calculează Molarity

Ce este Molarity?

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.

Ghid pas cu pas

  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

Exemple rezolvate

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

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