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Secondary IV • 8mo.

Bonjour,

Je fais un laboratoire virtuel sur la solubilitè. je met une solution à saturation avec un volume de 800 ml et je mesure la concentration molaire qui donne par exemple C1= 0.45 mol/l . j'evapore la solution saturèe en enlevant 200ml, la concentration mesurèe reste inchangèe C2=0.45 mol/l. Toutefois dans mes calculs, si j'utilise C1 x V1 = C2 x V2, la concentration augmente.

comment expliquez-vous la difference entre la concentration mesurèe et la concentration calculèe?

merci pour votre aide

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