### Solubility and Precipitation: KNO3 in Water**Concept Overview:**Understanding solubility and precipitation is fundamental in chemistry. Solubility is the maximum amount of solute that can dissolve in a solvent at a given temperature. Precipitation occurs when the solute exceeds this amount and starts to form solid particles.**Problem Statement:**A solution holds 85 g of KNO₃ (potassium nitrate) at 50°C and 40 g at 25°C. What mass of KNO₃ will precipitate out if the solution is disturbed?**Graph Analysis:**The graph presented is a solubility curve. It depicts the solubility (in grams) of various salts, including potassium nitrate (KNO₃), at different temperatures (in °C). The y-axis indicates the amount of solute (in grams) per 100 g of water, while the x-axis represents temperature (°C).**Solubility Curve Details:**- **KNO₃**: As the temperature increases from 0°C to 100°C, solubility increases. - At 50°C, the solubility is 85 g/100 g H₂O. - At 25°C, the solubility is 40 g/100 g H₂O.**Solution:**- Initially, the solution holds 85 g of KNO₃ at 50°C, a saturated solution.- When the temperature decreases to 25°C, the solubility of KNO₃ decreases to 40 g/100 g H₂O.- The difference causes the excess solute to precipitate.**Calculation:**85 g (solubility at 50°C) - 40 g (solubility at 25°C) = 45 g**Answer:**The mass of KNO₃ that will precipitate out if the solution is disturbed is **45 grams**.**Interactive Element:**To find the answer, type the correct mass of KNO₃ in the textbox provided and click "Enter".**Verification:**Using the solubility curve, you can verify this answer by observing the points at 50°C (85 g) and 25°C (40 g) for KNO₃ on the graph to ensure correctness.**Round to the nearest 5 grams as requested.**

The above provided graph discusses the solubility of KNO3 in water at varying temperatures.

100 KI 90 80 70 KNO3 60 50 40 30 20 10 Solute per 100 g of H₂O (g) 0 0 NH,CI The solution holds 85 g at 50 °C and 40 g at 25°C. What mass of KNO3 will precipitate out if the solution is disturbed? mass KNO3 = [?] g Enter KCIO3 20 30 40 50 60 70 80 90 100 Temperature (°C) Round to the nearest 5 grams.

100 KI 90 80 70 KNO3 60 50 40 30 20 10 Solute per 100 g of H₂O (g) 0 0 NH,CI The solution holds 85 g at 50 °C and 40 g at 25°C. What mass of KNO3 will precipitate out if the solution is disturbed? mass KNO3 = [?] g Enter KCIO3 20 30 40 50 60 70 80 90 100 Temperature (°C) Round to the nearest 5 grams.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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