Answer: Sodium chloride's solubility has changed the least from
and potassium nitrate's solubility has changed the most from
.
Explanation:
Solubility in a particular liquid is the amount of solute that can dissolve in unit volume of the liquid to form the saturated solution at the given temperature and under a pressure of 1 atmosphere.
a) Solubility of Potassium iodide at
: 129g/100 ml
Solubility of Potassium iodide at
: 250g/10ml
Change in solubility of Potassium iodide = 
b) Solubility of sodium nitrate at
: 70g/100 ml
Solubility of sodium nitrate at
: 180 g/100 ml
Change in solubility of sodium nitrate = 
c) Solubility of Potassium nitrate at
: 12g/100 ml
Solubility of Potassium nitrate at
: 235g/100 ml
Change in solubility of Potassium nitrate = 
d) Solubility of sodium chloride at
: 36g/100 ml
Solubility of sodium chloride at
: 40 g/100 ml
Change in solubility of sodium chloride= 
e) Solubility of Potassium chlorate at
: 5g/100 ml
Solubility of Potassium chlorate at
: 60 g/100 ml
Change in solubility of Potassium chlorate = 
Thus we can see that sodium chloride's solubility has changed the least from
and potassium nitrate's solubility has changed the most from
.