The solubilities of two salts D and E are given in the following table in each case the solubility is expressed as grammes per 100g...

      

The solubilities of two salts D and E are given in the following table in each case the solubility is expressed as grammes per 100g of water.
Q2962019901.png

(a) Using these data plot solubility curves for D and E on the same grid.
(b) Use your graph to answer the following questions:
(i) At what temperature are the solubilities of the two salts equal?
(ii) Estimate the solubility of salt D at OºC.
(iii) A saturated solution of E in 50g of water at 25ºC was evaporated to dryness. What was the mass of the residue?
(iv) Two separate 100g of water are saturated at 75ºC, one with D and the other with E. What is the difference in mass between
the two solutions?
(v) The saturated solution obtained were each cooled to 20ºC.
I Calculate the total mass of the two salts precipitated.
II Calculate the mass of each salt dissolved at saturation in 20g of water at 20ºC.

  

Answers


Maurice
(a) Q2962019906.png
Q2962019915.png
Q2962019920.png


maurice.mutuku answered the question on September 6, 2019 at 06:22


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