Question
What am I doing wrong? Can somebody please help me? I only have one try left
Classify Each Of The Foll × Lab report instructions- xCourse Home × Write Boarced Net lore X openvellum.e ollege.com/course.html?courseId-1 4300489&OpenVellumHMAC-422d3732158fe749; 4c 3028ecfd5342.10 01 Secure | https://session.masteringchemistry.com/myct/itemView?assignmentProblemiD-90389279 Experiment 5. Reactions in Aqueous So. Solubility and Temperature e previous | 2 of 6 next s Solubility and Temperature A solid mixture consists of 51.0 g of KNOs (potassium nitrate) and 9.0 g of K2SO4 (potassium sulfate). The mixture is added to 130. g of water Crystallization Crystallization is the opposite of dissolution. Since solids tend to dissolve better at higher temperatures, we can cause them to crystallize (ie, undissolve) from a solution by lowering the temperature Use this solubility curve (Figure 1) to answer the questions Part B If the solution described in the introduction is cooled to 0 °C, what mass of KNO, should crystallize? Enter your answer numerically in grams. Figu 1 of! Hints KNO, NH,CI NaCl 34.8 Li SO, Submit My Answers Give Up 20 Incorrect: One attempt remaining; Try Again KC1O4 0 1023040 Temperature. "C Part c
Explanation / Answer
at 00C KNO3 can dissolve nearly15g of solute in 100g of water. (from solubility curve).
Since we have a mixture of compound KNO3 and K2SO4 but after recrystallization K2SO4 will be removed only KNO3 will be left.
Since the weight of KNO3 taken is 51.0 g and amount of solvent is 130.0g (H2O).
since we know that 100g of water can dissolve 15g of KNO3
so 1g of water can dissolve 15/100 =0.15g of KNO3.
and hence 130.0 g of water can dissolve 130 x 0.15 =19.5g of KNO3
So probably 19.5g of KNO3 will crystallize.
