Below is a table showing the solubilities of salts Q and R at different temperatures.

      

Below is a table showing the solubilities of salts Q and R at different temperatures.
Q1010252019858.pngQ1010252019859.png
(a) Define the term “Solubility of salt”
(b) If both salts Q and R are present in 100cm3 of saturated solution at 50oC, what will be the total mass of crystals formed if the solution was cooled to 20oC?

  

Answers


Maurice
a) Solubility of a salt is mass of a salt that dissolves in 100g of water at a given temperature.

b) Mass of Q that crystallizes out = 19.0 – 7.4 = 11.6 g.
Mass of R that crystallizes out = 33 – 20.7= 12.3g.
Total mass of crystals = 12.3 + 11.6= 23.9g
maurice.mutuku answered the question on October 25, 2019 at 06:04


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