Solubility curve
The above are the solubility curves of ammonia(NH
) and magnesium sulfate(MgSO
). Which of following explanations is correct?
a) The molality of the two solutions is the same at point P.
b) (A) is the solubility curve of magnesium sulfate.
c) If the temperature of saturated solution (B) is decreased from T to T , then the solution begins to precipitate the excess amount of solute.
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1 solution
Molar solubility is the maximum number of moles that can be dissolved before the solution becomes saturated. Since none of them arise from saturation but merely an interception of (usual) solubility, there makes no point for same molar at P.
Vaporizing N H 3 cannot stay in water towards boiling of water solvent while solid M g S O 4 should become more soluble towards boiling of water solvent.
Answer: c )