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.


(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.

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(a)

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

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