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Use the solubility graph to answer the following questions.

1. How many grams of potassium chlorate (KClO3) are needed to make a saturated solution at 90°C?
2. How many grams of potassium chloride (KCl) can be dissolved in 68.0 g of water at 40°C?
3. 75 grams of calcium chloride is added to 100 g of water at 25°C. Is the solutions unsaturated, saturated, or supersaturated?
4. Based on the graph above, cerium sulfate (Ce2(SO4)3) behaves like a substance that is in what physical state? Explain how you know.
5. 10.0 g of KCl are dissolved at 40°C. How many more grams should be added to make a saturated solution?

Use The Solubility Graph To Answer The Following Questions 1 How Many Grams Of Potassium Chlorate KClO3 Are Needed To Make A Saturated Solution At 90C 2 How Man class=

Sagot :

The required amount of KClO₃ to prepare a saturated solution is 48 grams.

What is solubility?

The ability of a material, the solute, to create a solution with another substance, the solvent, is known as solubility.

Given graph is plotted between the temperature and solubility of the substance at 100g of water, so for the given points calculation will be:

  • According to the graph for the KClO₃ we require almost 48g of KClO₃ to prepare a saturated solution.
  • From the graph it is clear that at 40°C 40g of KCl will dissolve in 100g of water then amount of KCl which will dissolve in 68g of water will be calculated as:

x = (40)(68) / (100) = 27.2g

  • On the basis of the graph, if 75 grams of calcium chloride is added to 100 g of water at 25°C then the obtained solution is the unsaturated as they have les solute then the limit.
  • Based on the graph cerium sulfate behaves like a precipitate which will not dissolve at any temperature and present in the physical state.
  • We can add more 30g to make the KCl solution saturated.

Hence, we require almost 48g of KClO₃ to prepare a saturated solution of KClO₃.

To know more about solubility, visit the below link:

https://brainly.com/question/16903071

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