Don\'t know how to do part C A solid mixture consists of 37.4 g of KNO_3 (potass

Question

Don't know how to do part C

A solid mixture consists of 37.4 g of KNO_3 (potassium nitrate) and 6.6 g of K_2 SO_4 (potassium sulfate). The mixture is added to 130. g of water. Use this solubility curve (figure 1) to answer the questions. If the solution described in the introduction is cooled to 0 degree C, what mass of KNO_3 should crystallize? Enter your answer numerically in grams. Significant Figures Feedback: Your answer 19.2 g was either rounded differently or used a different number of significant figures than required for this part. If the solution described in the in the introduction is cooled to 0 degree C what mass of K_2 SO_4 will crystallize? Enter your answer numerically in grams.

Explanation / Answer

solubility of KNO3 at 0C0     15g per 100ml of water

                                              100ml of water = 15 g of KNO3

                                              300ml of water = 15*300/100   = 45g of KNO3

                                                 crystalise form = 45-37.4   = 7.6g of KNO3

                                       

                    

solubility of K2So4 at 0C0    7.1g per 100ml of water

    100ml of water = 7.1g of K2So4

   130ml of water = 7.1*130/100 = 9.23

    crystalise form K2SO4 = 9.23-6.6 = 2.63g of K2So4

   

                

                                             

                                             

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