Chapter 14: Solutions em 7 Consider the mixture described in the introduction. A

Question

Chapter 14: Solutions em 7 Consider the mixture described in the introduction. At 60 °C·to what extent will each solute be A solid midture consists of 40.8 g of KNOs (potassium nitrate) and 7.2g of K2SO4 (potassium sulfate). The mixture is added to 130.g of water. dissolved? Drag each item to the appropriate bin. View Available Hint(o) Use this solubility curve (Figure 1) to answer the Reset Help igure 1 of 1 Totally dissolved Partially dissolvedNot dissolved KNO,/ NH NaC LiSO, K,so KCiO, 010 203040 Submit Temperature C

Explanation / Answer

At 60 C both salts will be totally dissolved.

For KNO3 , from the graph we see even at 40C the solubility is > 55gper 100g of water. thus in 130g all the 40.8g is already dissolved completely.

For K2SO4 at 60C, the graph shows solubility as 18g/100mL.

In the given solution , we have only 7.2g in 130g of water , thus all K2SO4 also dissolves completely.

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